[Lift] Re: Serious widget action
Please see here http://groups.google.com/group/liftweb/browse_thread/thread/5e4f5e424d33db40/32cfb6752954?lnk=gstq=ExtJs#32cfb6752954 I'd strongly encourage you to integrate ExtJs with Lift and potentially other frameworks. Depending on JS library licence we'd be happy to have integrations with other JS frameworks. JsArtifacts should provide you the necessary abstractions for such integrations but if you run into problems, please let us know. On Mar 10, 8:27 am, Jim Barrows jim.barr...@gmail.com wrote: On Tue, Mar 9, 2010 at 8:45 PM, aw anth...@whitford.com wrote: It is time for me to add some serious widgets to my lift app. So far, I am most enamored by ExtJS. Another alternative could possibly be ZK. Does anybody have any experience with these frameworks? Can you comment on why integrating them with Scala/Lift would be a bad idea (or not work)? I searched for some historical posts on ExtJS and discovered some threads about it's license and how it impacts inclusion in the lift framework. Would a commercial license prohibit it from being a lift- widget submodule candidate? Does anybody have a better suggestion that you think can compete with ExtJS? I'm using ExtJS in anger at 0rk. 3.1.1 is nice. 3.0.0 is weird. Some odd bugs being reported. We're also getting some weird interactions with some other js libraries ( I won't mention it, it's not available anymore, and if it was it just leave you scarred) and CSS. However, that's the other libraries fault more then ExtJS's. If you want something that looks and feels as close to a desktop app as you can get.. ExtJS can do the job well. With Lift providing the JSON, it would be hard to go wrong. That said.. ExtJS is not an easy beast to learn. It's even worse to try and L10N it easily. I would not try and use just pieces of it, it's really not designed to do that. It seems to me to be an all or nothing approach. That's not say you can't use it piecemeal, I think you lose a lot of flexibility (especially in layout) that way. I wouldn't use it if left to my own devices though, unless I had a requirement for a desktop app on the web. It's serious overkill. -- James A Barrows -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Serious widget action
Personally, I would say forget ExtJS, compared to Cappuccino its streets behind: http://cappuccino.org/ Easily the most exciting UI framework out there right now Cheers, Tim On 10 Mar 2010, at 03:45, aw wrote: It is time for me to add some serious widgets to my lift app. So far, I am most enamored by ExtJS. Another alternative could possibly be ZK. Does anybody have any experience with these frameworks? Can you comment on why integrating them with Scala/Lift would be a bad idea (or not work)? I searched for some historical posts on ExtJS and discovered some threads about it's license and how it impacts inclusion in the lift framework. Would a commercial license prohibit it from being a lift- widget submodule candidate? Does anybody have a better suggestion that you think can compete with ExtJS? -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: Serious widget action
ExtCore is MIT Licensed and a candidate for JSArtifacts impl [1]. I started dabbling with an implementation of ExtCoreArtifacts sometime back, but didn't have enough bandwidth to carry it forward. In case somebody is willing to run with this, there is a ticket for this already [2] Non ExtCore are GPLed and doesn't mix conveniently. Although there are some exceptions, I am not sure how practically that works license wise [3]. Cheers, Indrajit [1] http://www.extjs.com/products/extcore/ [2] http://www.assembla.com/spaces/liftweb/tickets/132 [3] http://www.extjs.com/products/floss-exception.php On Wed, Mar 10, 2010 at 1:55 PM, Marius marius.dan...@gmail.com wrote: Please see here http://groups.google.com/group/liftweb/browse_thread/thread/5e4f5e424d33db40/32cfb6752954?lnk=gstq=ExtJs#32cfb6752954 I'd strongly encourage you to integrate ExtJs with Lift and potentially other frameworks. Depending on JS library licence we'd be happy to have integrations with other JS frameworks. JsArtifacts should provide you the necessary abstractions for such integrations but if you run into problems, please let us know. On Mar 10, 8:27 am, Jim Barrows jim.barr...@gmail.com wrote: On Tue, Mar 9, 2010 at 8:45 PM, aw anth...@whitford.com wrote: It is time for me to add some serious widgets to my lift app. So far, I am most enamored by ExtJS. Another alternative could possibly be ZK. Does anybody have any experience with these frameworks? Can you comment on why integrating them with Scala/Lift would be a bad idea (or not work)? I searched for some historical posts on ExtJS and discovered some threads about it's license and how it impacts inclusion in the lift framework. Would a commercial license prohibit it from being a lift- widget submodule candidate? Does anybody have a better suggestion that you think can compete with ExtJS? I'm using ExtJS in anger at 0rk. 3.1.1 is nice. 3.0.0 is weird. Some odd bugs being reported. We're also getting some weird interactions with some other js libraries ( I won't mention it, it's not available anymore, and if it was it just leave you scarred) and CSS. However, that's the other libraries fault more then ExtJS's. If you want something that looks and feels as close to a desktop app as you can get.. ExtJS can do the job well. With Lift providing the JSON, it would be hard to go wrong. That said.. ExtJS is not an easy beast to learn. It's even worse to try and L10N it easily. I would not try and use just pieces of it, it's really not designed to do that. It seems to me to be an all or nothing approach. That's not say you can't use it piecemeal, I think you lose a lot of flexibility (especially in layout) that way. I wouldn't use it if left to my own devices though, unless I had a requirement for a desktop app on the web. It's serious overkill. -- James A Barrows -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: Serious widget action
+1 for cappuccino Played around with it a while back - it's pretty amazing. What kind of intergration are we talking about? I wouldn't mind taking a look at intergrating cappuccino. On 10/03/2010, at 10.37, Indrajit Raychaudhuri wrote: ExtCore is MIT Licensed and a candidate for JSArtifacts impl [1]. I started dabbling with an implementation of ExtCoreArtifacts sometime back, but didn't have enough bandwidth to carry it forward. In case somebody is willing to run with this, there is a ticket for this already [2] Non ExtCore are GPLed and doesn't mix conveniently. Although there are some exceptions, I am not sure how practically that works license wise [3]. Cheers, Indrajit [1] http://www.extjs.com/products/extcore/ [2] http://www.assembla.com/spaces/liftweb/tickets/132 [3] http://www.extjs.com/products/floss-exception.php On Wed, Mar 10, 2010 at 1:55 PM, Marius marius.dan...@gmail.com wrote: Please see here http://groups.google.com/group/liftweb/browse_thread/thread/5e4f5e424d33db40/32cfb6752954?lnk=gstq=ExtJs#32cfb6752954 I'd strongly encourage you to integrate ExtJs with Lift and potentially other frameworks. Depending on JS library licence we'd be happy to have integrations with other JS frameworks. JsArtifacts should provide you the necessary abstractions for such integrations but if you run into problems, please let us know. On Mar 10, 8:27 am, Jim Barrows jim.barr...@gmail.com wrote: On Tue, Mar 9, 2010 at 8:45 PM, aw anth...@whitford.com wrote: It is time for me to add some serious widgets to my lift app. So far, I am most enamored by ExtJS. Another alternative could possibly be ZK. Does anybody have any experience with these frameworks? Can you comment on why integrating them with Scala/Lift would be a bad idea (or not work)? I searched for some historical posts on ExtJS and discovered some threads about it's license and how it impacts inclusion in the lift framework. Would a commercial license prohibit it from being a lift- widget submodule candidate? Does anybody have a better suggestion that you think can compete with ExtJS? I'm using ExtJS in anger at 0rk. 3.1.1 is nice. 3.0.0 is weird. Some odd bugs being reported. We're also getting some weird interactions with some other js libraries ( I won't mention it, it's not available anymore, and if it was it just leave you scarred) and CSS. However, that's the other libraries fault more then ExtJS's. If you want something that looks and feels as close to a desktop app as you can get.. ExtJS can do the job well. With Lift providing the JSON, it would be hard to go wrong. That said.. ExtJS is not an easy beast to learn. It's even worse to try and L10N it easily. I would not try and use just pieces of it, it's really not designed to do that. It seems to me to be an all or nothing approach. That's not say you can't use it piecemeal, I think you lose a lot of flexibility (especially in layout) that way. I wouldn't use it if left to my own devices though, unless I had a requirement for a desktop app on the web. It's serious overkill. -- James A Barrows -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Serious widget action
Most certainly, yes! Quite like what Anthony is looking for. But (a) this is different from JSArtifacts implementation for ExtCore that we talked about couple of times and (b) Cappuccino isn't license compatible either (for the purpose of integration within Lift). Anthony, fwiw, David did some stuff on this last year that could be of some interest to you :) [1] Cheers, Indrajit [1] http://github.com/dpp/Frothy On Wed, Mar 10, 2010 at 2:45 PM, Timothy Perrett timo...@getintheloop.eu wrote: Personally, I would say forget ExtJS, compared to Cappuccino its streets behind: http://cappuccino.org/ Easily the most exciting UI framework out there right now Cheers, Tim On 10 Mar 2010, at 03:45, aw wrote: It is time for me to add some serious widgets to my lift app. So far, I am most enamored by ExtJS. Another alternative could possibly be ZK. Does anybody have any experience with these frameworks? Can you comment on why integrating them with Scala/Lift would be a bad idea (or not work)? I searched for some historical posts on ExtJS and discovered some threads about it's license and how it impacts inclusion in the lift framework. Would a commercial license prohibit it from being a lift- widget submodule candidate? Does anybody have a better suggestion that you think can compete with ExtJS? -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: Serious widget action
The only possible thing that one could do would need two aspects: 1. The lift side to produce particular JSON 2. The capp side to consume said JSON Without a full package, there aren't really any integration points as we have already got comet working with capp so the only thing remaining is overall user implementation experience. Cheers, Tim On 10 Mar 2010, at 09:40, Mads Hartmann Jensen wrote: +1 for cappuccino Played around with it a while back - it's pretty amazing. What kind of intergration are we talking about? I wouldn't mind taking a look at intergrating cappuccino. On 10/03/2010, at 10.37, Indrajit Raychaudhuri wrote: ExtCore is MIT Licensed and a candidate for JSArtifacts impl [1]. I started dabbling with an implementation of ExtCoreArtifacts sometime back, but didn't have enough bandwidth to carry it forward. In case somebody is willing to run with this, there is a ticket for this already [2] Non ExtCore are GPLed and doesn't mix conveniently. Although there are some exceptions, I am not sure how practically that works license wise [3]. Cheers, Indrajit [1] http://www.extjs.com/products/extcore/ [2] http://www.assembla.com/spaces/liftweb/tickets/132 [3] http://www.extjs.com/products/floss-exception.php On Wed, Mar 10, 2010 at 1:55 PM, Marius marius.dan...@gmail.com wrote: Please see here http://groups.google.com/group/liftweb/browse_thread/thread/5e4f5e424d33db40/32cfb6752954?lnk=gstq=ExtJs#32cfb6752954 I'd strongly encourage you to integrate ExtJs with Lift and potentially other frameworks. Depending on JS library licence we'd be happy to have integrations with other JS frameworks. JsArtifacts should provide you the necessary abstractions for such integrations but if you run into problems, please let us know. On Mar 10, 8:27 am, Jim Barrows jim.barr...@gmail.com wrote: On Tue, Mar 9, 2010 at 8:45 PM, aw anth...@whitford.com wrote: It is time for me to add some serious widgets to my lift app. So far, I am most enamored by ExtJS. Another alternative could possibly be ZK. Does anybody have any experience with these frameworks? Can you comment on why integrating them with Scala/Lift would be a bad idea (or not work)? I searched for some historical posts on ExtJS and discovered some threads about it's license and how it impacts inclusion in the lift framework. Would a commercial license prohibit it from being a lift- widget submodule candidate? Does anybody have a better suggestion that you think can compete with ExtJS? I'm using ExtJS in anger at 0rk. 3.1.1 is nice. 3.0.0 is weird. Some odd bugs being reported. We're also getting some weird interactions with some other js libraries ( I won't mention it, it's not available anymore, and if it was it just leave you scarred) and CSS. However, that's the other libraries fault more then ExtJS's. If you want something that looks and feels as close to a desktop app as you can get.. ExtJS can do the job well. With Lift providing the JSON, it would be hard to go wrong. That said.. ExtJS is not an easy beast to learn. It's even worse to try and L10N it easily. I would not try and use just pieces of it, it's really not designed to do that. It seems to me to be an all or nothing approach. That's not say you can't use it piecemeal, I think you lose a lot of flexibility (especially in layout) that way. I wouldn't use it if left to my own devices though, unless I had a requirement for a desktop app on the web. It's serious overkill. -- James A Barrows -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: Serious widget action
On 10/03/10 3:21 PM, Timothy Perrett wrote: The only possible thing that one could do would need two aspects: 1. The lift side to produce particular JSON 2. The capp side to consume said JSON Without a full package, there aren't really any integration points as we have already got comet working with capp so the only thing remaining is overall user implementation experience. +1 And some docs, may be. The previous discussion thread on this: http://groups.google.com/group/liftweb/browse_thread/thread/41839eee55ab8e2b/de6ed5b83242ab16 Cheers, Indrajit Cheers, Tim On 10 Mar 2010, at 09:40, Mads Hartmann Jensen wrote: +1 for cappuccino Played around with it a while back - it's pretty amazing. What kind of intergration are we talking about? I wouldn't mind taking a look at intergrating cappuccino. On 10/03/2010, at 10.37, Indrajit Raychaudhuri wrote: ExtCore is MIT Licensed and a candidate for JSArtifacts impl [1]. I started dabbling with an implementation of ExtCoreArtifacts sometime back, but didn't have enough bandwidth to carry it forward. In case somebody is willing to run with this, there is a ticket for this already [2] Non ExtCore are GPLed and doesn't mix conveniently. Although there are some exceptions, I am not sure how practically that works license wise [3]. Cheers, Indrajit [1] http://www.extjs.com/products/extcore/ [2] http://www.assembla.com/spaces/liftweb/tickets/132 [3] http://www.extjs.com/products/floss-exception.php On Wed, Mar 10, 2010 at 1:55 PM, Mariusmarius.dan...@gmail.com wrote: Please see here http://groups.google.com/group/liftweb/browse_thread/thread/5e4f5e424d33db40/32cfb6752954?lnk=gstq=ExtJs#32cfb6752954 I'd strongly encourage you to integrate ExtJs with Lift and potentially other frameworks. Depending on JS library licence we'd be happy to have integrations with other JS frameworks. JsArtifacts should provide you the necessary abstractions for such integrations but if you run into problems, please let us know. On Mar 10, 8:27 am, Jim Barrowsjim.barr...@gmail.com wrote: On Tue, Mar 9, 2010 at 8:45 PM, awanth...@whitford.com wrote: It is time for me to add some serious widgets to my lift app. So far, I am most enamored by ExtJS. Another alternative could possibly be ZK. Does anybody have any experience with these frameworks? Can you comment on why integrating them with Scala/Lift would be a bad idea (or not work)? I searched for some historical posts on ExtJS and discovered some threads about it's license and how it impacts inclusion in the lift framework. Would a commercial license prohibit it from being a lift- widget submodule candidate? Does anybody have a better suggestion that you think can compete with ExtJS? I'm using ExtJS in anger at 0rk. 3.1.1 is nice. 3.0.0 is weird. Some odd bugs being reported. We're also getting some weird interactions with some other js libraries ( I won't mention it, it's not available anymore, and if it was it just leave you scarred) and CSS. However, that's the other libraries fault more then ExtJS's. If you want something that looks and feels as close to a desktop app as you can get.. ExtJS can do the job well. With Lift providing the JSON, it would be hard to go wrong. That said.. ExtJS is not an easy beast to learn. It's even worse to try and L10N it easily. I would not try and use just pieces of it, it's really not designed to do that. It seems to me to be an all or nothing approach. That's not say you can't use it piecemeal, I think you lose a lot of flexibility (especially in layout) that way. I wouldn't use it if left to my own devices though, unless I had a requirement for a desktop app on the web. It's serious overkill. -- James A Barrows -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options
[Lift] lift-core would be removed from repository shortly
Folks, As discussed earlier, lift-core would be removed from repository sometime soon. For the deprecation notice and the rationale, please take a look at the announcement posted earlier [1]. If your application is still using lift-core, make the changes NOW! Soon it would stop working with 2.0-SNAPSHOT. The upcoming 2.0-M4 would not have it either. Cheers, Indrajit [1] http://groups.google.com/group/lift-announce/browse_thread/thread/28e9149425d8e6f3 -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] non-Lazy evaluation of bind FuncBindParam functions?
I've been trying to figure why some binding is giving me a stack
overflow and I've discovered that if you use the BindHelpers.bind
method with a set of function BindParams, all the functions are
evaluated regardless of whether a match is found.
So, for example, if you bind to an empty NodeSeq and have a BindParam
which will never match like:
you won't find me here - { print(Got here!);
NodeSeq.Empty }
…you find that the print statement is called.
This really surprised me. Is this intentional behaviour as it seems
to be a potential source of significant redundant processing?
Stuart.
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Re: [Lift] Enable -Xcheckinit in 2.8 port?
On 08/03/10 11:48 PM, David Pollak wrote: On Mon, Mar 8, 2010 at 10:01 AM, Jeppe Nejsum Madsen je...@ingolfs.dk mailto:je...@ingolfs.dk wrote: Hi, Just found out why the Logging stuff doesn't work on the 2.8 branch. Details here: http://permalink.gmane.org/gmane.comp.lang.scala.user/24469 Is it somehow possible to enable the -Xcheckinit flag for the 2.8 branch? Don't know how common that issue is, but it may help trap some subtle errors. Don't know what the performance penalty is though. Let's enable the flag for the 2.8 branch along with the deprecation flag (Indrajit, can you do this?) Use the profile -Dlift-debug for the purpose. It has the deprecation flag, I'll add the checkinit flag. - Indrajit /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to liftweb@googlegroups.com mailto:liftweb@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com mailto:liftweb%2bunsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Multiple stateful snippets in a page , keeping the common state?
The short answer is no. The slightly longer answer is Can you put both into a single snippet? The even longer answer is Have you tried using Ajax forms so you don't even leave the page? On Tue, Mar 9, 2010 at 10:19 PM, hexa hex...@gmail.com wrote: Hi, I have 2 Stateful snippets in a page : 1. a InvoiceList snippet that 1. If no client RequestVar is present lists all the invoices in the system 2. If a client RequestVar is present lists the invoices for that client 2. a AddInvoice snippet that displays a form and adds an invoice binded on the Client RequestVar.. Now these 2 can share the same RequestVar.. and that's fine for one request And at least in the case of 1 stateful snippet since I set the request var to a class var , it persists after a submit on the AddInvoice... the client persists But for the other snippet .. the state is lost... So is there a way to manage the common states of multiple snippets in a page ? Should I use a SessionVar ? I kinda would prefer not to since It's really not a var that should be persistent over the session The best would be that they both keep their state .. as an action is performed on one of them... Thanks a lot hexa -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: non-Lazy evaluation of bind FuncBindParam functions?
Okay, so I now understand what is happening a little better.
When I saw a construct like:
bind(example,xhtml,
first_name - SHtml.text(user.first_name, user.first_name(_)),
last_name - SHtml.text(user.last_name, user.last_name(_))
it reminded me of a match with cases and my assumption was that each
match would only be called if and when the match was found. In reality
what appears to happen is that the item on the right hand side of the
- is usually evaluated and then placed into a Map with the String
like first_name being the key.
So, if every binding is used in every case there is no big issue here,
but if you have bindings that aren't all used they will none-the-less
be evaluated every time you try to bind.
Also every time the bind function is called a new Map appears to be
generated and indexed in memory which doesn't seem as efficient as it
could be.
I can't help but wonder whether this could be converted to a form of
match which would then be built at compile time and re-used and would
only evaluate those matches that matched.
In the meantime I see that you can convert the code above to:
bind(example,xhtml,
FuncBindParam(first_name, () = SHtml.text(user.first_name,
user.first_name(_)),
FuncBindParam(last_name, () = SHtml.text(user.last_name,
user.last_name(_))
to get a form of lazy evaluation.
On Mar 10, 11:01 am, Stuart Roebuck stuart.roeb...@gmail.com wrote:
I've been trying to figure why some binding is giving me a stack
overflow and I've discovered that if you use the BindHelpers.bind
method with a set of function BindParams, all the functions are
evaluated regardless of whether a match is found.
So, for example, if you bind to an empty NodeSeq and have a BindParam
which will never match like:
you won't find me here - { print(Got here!);
NodeSeq.Empty }
…you find that the print statement is called.
This really surprised me. Is this intentional behaviour as it seems
to be a potential source of significant redundant processing?
Stuart.
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[Lift] Re: Serious widget action
On Mar 10, 1:15 am, Timothy Perrett timo...@getintheloop.eu wrote: Personally, I would say forget ExtJS, compared to Cappuccino its streets behind: http://cappuccino.org/ Easily the most exciting UI framework out there right now Perhaps I should add that I need sophisticated grids: http://www.extjs.com/deploy/dev/examples/#sample-3 A bunch of options like JQuery UI, YUI, and from what I see from Cappuccino don't seam to come close to the kind of widget sophistication that I am seeing in ExtJS. Hence, ExtJS is my front runner. (Flex is ultimately competition, but I don't like dealing with Flash.) I have a sprinkling of JQuery usage in my app already, and my initial thought was to simply use the JQuery adapter for ExtJS. Alternatively, I could probably just rewrite my JQuery code in ExtJS -- assuming then I would take the route to provide a jsArtifact for ExtJS. My real concern is factors like security and leveraging things like SHtml.link -- I don't want an oil and water scenario. I still need to deep dive into ExtJS, but wanted to float the idea in case someone was aware of a red flag before I wasted too much time. It doesn't sound like anybody is using ZK [1], eh? [1] http://zkoss.org/ -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: Multiple stateful snippets in a page , keeping the common state?
ok,, I don't want to put them in a single snippet since I want to be able to use them independently .. I could call one snippet from the other I guess this would work but just doesn't feel right... I would end up having to do one snippet per page to control the subsnippets... In fact i'm not sure how I can compose independent even non stateful snippets... without having an enclosing controler snippet Best would be if non-stateful snippets could find each other for example could I have something like lift::SnippetA lift:SnippetB /lift:SnippetB /lift::SnippetA And have snippet B find the snippet A instance ? and modify it's rendering based on it ? or something similar? This way my list Invoice could know what it's in a AddInvoice snippet and get the Client it must show the invoices for .. And otherwise just render all invoices... Having it in another context could make it render different things... Or would I really have to bind SnippetB inside SnippetA with chooseTemplate and directly call it's functions with the arguments I need ? and do this all top-down... rather then down-top... So basically I guess the question is how do you manage multiple snippets (non-stateful) so that they are the most independent from each other and that code can reused and scoped properly if they have any effect on each other and or that they can enclose each other... Maybe Im way off too ,, sorry , Help is much apreciated... I will try the ajax way too, and I guess I could repost the RequestVar.. need to try that too.. Thanks, hexa On Mar 10, 9:33 am, David Pollak feeder.of.the.be...@gmail.com wrote: The short answer is no. The slightly longer answer is Can you put both into a single snippet? The even longer answer is Have you tried using Ajax forms so you don't even leave the page? On Tue, Mar 9, 2010 at 10:19 PM, hexa hex...@gmail.com wrote: Hi, I have 2 Stateful snippets in a page : 1. a InvoiceList snippet that 1. If no client RequestVar is present lists all the invoices in the system 2. If a client RequestVar is present lists the invoices for that client 2. a AddInvoice snippet that displays a form and adds an invoice binded on the Client RequestVar.. Now these 2 can share the same RequestVar.. and that's fine for one request And at least in the case of 1 stateful snippet since I set the request var to a class var , it persists after a submit on the AddInvoice... the client persists But for the other snippet .. the state is lost... So is there a way to manage the common states of multiple snippets in a page ? Should I use a SessionVar ? I kinda would prefer not to since It's really not a var that should be persistent over the session The best would be that they both keep their state .. as an action is performed on one of them... Thanks a lot hexa -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web frameworkhttp://liftweb.net Beginning Scalahttp://www.apress.com/book/view/1430219890 Follow me:http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: Serious widget action
If you've already decided on ExtJS, why don't you just go use it? Dirk from Ext was originally going to do ExtJS integration, but he has disappeared into the ether never to be seen again. You could always start an integration module on github and go from there... Cheers, Tim On Mar 10, 3:29 pm, aw anth...@whitford.com wrote: On Mar 10, 1:15 am, Timothy Perrett timo...@getintheloop.eu wrote: Personally, I would say forget ExtJS, compared to Cappuccino its streets behind: http://cappuccino.org/ Easily the most exciting UI framework out there right now Perhaps I should add that I need sophisticated grids: http://www.extjs.com/deploy/dev/examples/#sample-3 A bunch of options like JQuery UI, YUI, and from what I see from Cappuccino don't seam to come close to the kind of widget sophistication that I am seeing in ExtJS. Hence, ExtJS is my front runner. (Flex is ultimately competition, but I don't like dealing with Flash.) I have a sprinkling of JQuery usage in my app already, and my initial thought was to simply use the JQuery adapter for ExtJS. Alternatively, I could probably just rewrite my JQuery code in ExtJS -- assuming then I would take the route to provide a jsArtifact for ExtJS. My real concern is factors like security and leveraging things like SHtml.link -- I don't want an oil and water scenario. I still need to deep dive into ExtJS, but wanted to float the idea in case someone was aware of a red flag before I wasted too much time. It doesn't sound like anybody is using ZK [1], eh? [1]http://zkoss.org/ -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: non-Lazy evaluation of bind FuncBindParam functions?
The simple way of using FuncBindParam is:
first_name - { (ns: NodeSeq) = SHtml.text(...) }
That will only generate the text if the tag first_name appears.
-Ross
On Mar 10, 2010, at 10:22 AM, Stuart Roebuck wrote:
Okay, so I now understand what is happening a little better.
When I saw a construct like:
bind(example,xhtml,
first_name - SHtml.text(user.first_name, user.first_name(_)),
last_name - SHtml.text(user.last_name, user.last_name(_))
it reminded me of a match with cases and my assumption was that each
match would only be called if and when the match was found. In reality
what appears to happen is that the item on the right hand side of the
- is usually evaluated and then placed into a Map with the String
like first_name being the key.
So, if every binding is used in every case there is no big issue here,
but if you have bindings that aren't all used they will none-the-less
be evaluated every time you try to bind.
Also every time the bind function is called a new Map appears to be
generated and indexed in memory which doesn't seem as efficient as it
could be.
I can't help but wonder whether this could be converted to a form of
match which would then be built at compile time and re-used and would
only evaluate those matches that matched.
In the meantime I see that you can convert the code above to:
bind(example,xhtml,
FuncBindParam(first_name, () = SHtml.text(user.first_name,
user.first_name(_)),
FuncBindParam(last_name, () = SHtml.text(user.last_name,
user.last_name(_))
to get a form of lazy evaluation.
On Mar 10, 11:01 am, Stuart Roebuck stuart.roeb...@gmail.com wrote:
I've been trying to figure why some binding is giving me a stack
overflow and I've discovered that if you use the BindHelpers.bind
method with a set of function BindParams, all the functions are
evaluated regardless of whether a match is found.
So, for example, if you bind to an empty NodeSeq and have a BindParam
which will never match like:
you won't find me here - { print(Got here!);
NodeSeq.Empty }
…you find that the print statement is called.
This really surprised me. Is this intentional behaviour as it seems
to be a potential source of significant redundant processing?
Stuart.
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Re: [Lift] Re: non-Lazy evaluation of bind FuncBindParam functions?
On Wed, Mar 10, 2010 at 7:22 AM, Stuart Roebuck stuart.roeb...@gmail.comwrote:
Okay, so I now understand what is happening a little better.
When I saw a construct like:
bind(example,xhtml,
first_name - SHtml.text(user.first_name, user.first_name(_)),
last_name - SHtml.text(user.last_name, user.last_name(_))
it reminded me of a match with cases and my assumption was that each
match would only be called if and when the match was found. In reality
what appears to happen is that the item on the right hand side of the
- is usually evaluated and then placed into a Map with the String
like first_name being the key.
You're welcome to take up laziness vs. strictness with the EPFL team.
There's only so much we can do to be lazy and it does take extra syntax
(see Ross's reply).
So, if every binding is used in every case there is no big issue here,
but if you have bindings that aren't all used they will none-the-less
be evaluated every time you try to bind.
Also every time the bind function is called a new Map appears to be
generated and indexed in memory which doesn't seem as efficient as it
could be.
There's a sign over a urinal in a mens room at Google that reads Premature
Optimization is the root of all evil. Now, I think that's an
overstatement, but in this case, it's applicable.
Is there an *actual* problem with building a Map()? Can you measure the
problem? Do you have a more efficient solution?
Now, when I wrote that particular code, I was very cognizant of the
performance implications.
The cost of producing the Map() (backed by a HashMap) in the normal case (no
hash collisions) is O(n). Worst case is O(n log n).
For each element we're binding, we have look up the tag of the node to bind.
If we are using our Map(), the look-up time is O(1) (or worst case O(log
n)). If we have n elements that we're binding, the expected cost is O(n)
and worst case is O(n log n).
So, we have an algorithm that normally executes in 2xO(n) and worst case
2xO(n log n).
Now, if we didn't create the Map, we'd have to cycle through the possible
binds and we'd wind up with O(n ^ 2). Even if you have a PartialFunction
(pattern matching) against strings, it's O(n) to match the pattern.
So, would you rather have an O(n) algorithm that can degrade to O(n log n)
and uses marginally more memory or would you rather have an O(n ^ 2)
algorithm that uses marginally less memory?
And if you're worried about the memory used by the Map(), on pre 1.6 build
16 JVMs, the Map will not likely escape the Eden memory pool (which means
very quick GC). On the most recent JVMs, the escape analysis should kick in
and the Map and its elements will be allocated on the heap and never be
subject to GC.
I can't help but wonder whether this could be converted to a form of
match which would then be built at compile time and re-used and would
only evaluate those matches that matched.
In the event that you can create a benchmark and a real-world situation that
actually needs this, please open a ticket. But, I suspect that even if you
pre-created a Map and passed it into bind(), that the performance would be
nearly identical, but we'd have more public APIs to document which seems to
be something that also annoys you.
In the meantime I see that you can convert the code above to:
bind(example,xhtml,
FuncBindParam(first_name, () = SHtml.text(user.first_name,
user.first_name(_)),
FuncBindParam(last_name, () = SHtml.text(user.last_name,
user.last_name(_))
to get a form of lazy evaluation.
On Mar 10, 11:01 am, Stuart Roebuck stuart.roeb...@gmail.com wrote:
I've been trying to figure why some binding is giving me a stack
overflow and I've discovered that if you use the BindHelpers.bind
method with a set of function BindParams, all the functions are
evaluated regardless of whether a match is found.
So, for example, if you bind to an empty NodeSeq and have a BindParam
which will never match like:
you won't find me here - { print(Got here!);
NodeSeq.Empty }
…you find that the print statement is called.
This really surprised me. Is this intentional behaviour as it seems
to be a potential source of significant redundant processing?
Stuart.
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Re: [Lift] Re: Serious widget action
On Wed, Mar 10, 2010 at 7:29 AM, aw anth...@whitford.com wrote: On Mar 10, 1:15 am, Timothy Perrett timo...@getintheloop.eu wrote: Personally, I would say forget ExtJS, compared to Cappuccino its streets behind: http://cappuccino.org/ Easily the most exciting UI framework out there right now Perhaps I should add that I need sophisticated grids: http://www.extjs.com/deploy/dev/examples/#sample-3 Hmmm... Cappuccino is the Apple AppKit, except it runs in the browser. Here's a cool example of a pure Cappuccino app: http://280slides.com/Editor/ Further, with Atlas ( http://280atlas.com/ ) you can take the output from NIB (Next Interface Builder, AKA OS X Interface Builder) files and literally run them in the browser. You have the full power of OS X's UI running in the browser. There's nothing in my experience that even comes close. A bunch of options like JQuery UI, YUI, and from what I see from Cappuccino don't seam to come close to the kind of widget sophistication that I am seeing in ExtJS. Hence, ExtJS is my front runner. (Flex is ultimately competition, but I don't like dealing with Flash.) I actually think that Cappuccino with Atlas is more powerful than Flash. I have a sprinkling of JQuery usage in my app already, and my initial thought was to simply use the JQuery adapter for ExtJS. Alternatively, I could probably just rewrite my JQuery code in ExtJS -- assuming then I would take the route to provide a jsArtifact for ExtJS. My real concern is factors like security and leveraging things like SHtml.link -- I don't want an oil and water scenario. I still need to deep dive into ExtJS, but wanted to float the idea in case someone was aware of a red flag before I wasted too much time. There are lots of things that can be done to integrate Lift's statefulness (server-side functions closing over state mapped to GUIDs sent to the client side) via JSON and Ajax/Comet. It will take a little thinking to get things right, but I have a high degree of confidence that it can be made right. It doesn't sound like anybody is using ZK [1], eh? [1] http://zkoss.org/ -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: Serious widget action
On Wed, Mar 10, 2010 at 1:40 AM, Mads Hartmann Jensen mads...@gmail.comwrote: +1 for cappuccino Played around with it a while back - it's pretty amazing. What kind of intergration are we talking about? I wouldn't mind taking a look at intergrating cappuccino. This would be a heck of an amazing GSoC project (although I'm not sure it's more important than the SBT stuff.) But, if you need any help from the 280 North guys, they have an ongoing interest in Lift integration. We hang out once a quarter or so and always walk away intending to do something, but never actually doing it. With this said, supporting both ExtJs (the MIT licensed part) and Cap would be awesome. On 10/03/2010, at 10.37, Indrajit Raychaudhuri wrote: ExtCore is MIT Licensed and a candidate for JSArtifacts impl [1]. I started dabbling with an implementation of ExtCoreArtifacts sometime back, but didn't have enough bandwidth to carry it forward. In case somebody is willing to run with this, there is a ticket for this already [2] Non ExtCore are GPLed and doesn't mix conveniently. Although there are some exceptions, I am not sure how practically that works license wise [3]. Cheers, Indrajit [1] http://www.extjs.com/products/extcore/ [2] http://www.assembla.com/spaces/liftweb/tickets/132 [3] http://www.extjs.com/products/floss-exception.php On Wed, Mar 10, 2010 at 1:55 PM, Marius marius.dan...@gmail.com wrote: Please see here http://groups.google.com/group/liftweb/browse_thread/thread/5e4f5e424d33db40/32cfb6752954?lnk=gstq=ExtJs#32cfb6752954 I'd strongly encourage you to integrate ExtJs with Lift and potentially other frameworks. Depending on JS library licence we'd be happy to have integrations with other JS frameworks. JsArtifacts should provide you the necessary abstractions for such integrations but if you run into problems, please let us know. On Mar 10, 8:27 am, Jim Barrows jim.barr...@gmail.com wrote: On Tue, Mar 9, 2010 at 8:45 PM, aw anth...@whitford.com wrote: It is time for me to add some serious widgets to my lift app. So far, I am most enamored by ExtJS. Another alternative could possibly be ZK. Does anybody have any experience with these frameworks? Can you comment on why integrating them with Scala/Lift would be a bad idea (or not work)? I searched for some historical posts on ExtJS and discovered some threads about it's license and how it impacts inclusion in the lift framework. Would a commercial license prohibit it from being a lift- widget submodule candidate? Does anybody have a better suggestion that you think can compete with ExtJS? I'm using ExtJS in anger at 0rk. 3.1.1 is nice. 3.0.0 is weird. Some odd bugs being reported. We're also getting some weird interactions with some other js libraries ( I won't mention it, it's not available anymore, and if it was it just leave you scarred) and CSS. However, that's the other libraries fault more then ExtJS's. If you want something that looks and feels as close to a desktop app as you can get.. ExtJS can do the job well. With Lift providing the JSON, it would be hard to go wrong. That said.. ExtJS is not an easy beast to learn. It's even worse to try and L10N it easily. I would not try and use just pieces of it, it's really not designed to do that. It seems to me to be an all or nothing approach. That's not say you can't use it piecemeal, I think you lose a lot of flexibility (especially in layout) that way. I wouldn't use it if left to my own devices though, unless I had a requirement for a desktop app on the web. It's serious overkill. -- James A Barrows -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me
Re: [Lift] Re: Serious widget action
On Wed, Mar 10, 2010 at 1:51 AM, Timothy Perrett timo...@getintheloop.euwrote: The only possible thing that one could do would need two aspects: 1. The lift side to produce particular JSON 2. The capp side to consume said JSON Without a full package, there aren't really any integration points as we have already got comet working with capp so the only thing remaining is overall user implementation experience. Oh, I disagree. I think there are a lot of interesting potential ways to write model (not RDBMS models, but more general models) that emit Obj-J such that they feel natural to Cap and fully integrate with Cap (and Atlas) but are strongly typed and play well in Scala/Lift/Akka/Goat Rodeo land. Cheers, Tim On 10 Mar 2010, at 09:40, Mads Hartmann Jensen wrote: +1 for cappuccino Played around with it a while back - it's pretty amazing. What kind of intergration are we talking about? I wouldn't mind taking a look at intergrating cappuccino. On 10/03/2010, at 10.37, Indrajit Raychaudhuri wrote: ExtCore is MIT Licensed and a candidate for JSArtifacts impl [1]. I started dabbling with an implementation of ExtCoreArtifacts sometime back, but didn't have enough bandwidth to carry it forward. In case somebody is willing to run with this, there is a ticket for this already [2] Non ExtCore are GPLed and doesn't mix conveniently. Although there are some exceptions, I am not sure how practically that works license wise [3]. Cheers, Indrajit [1] http://www.extjs.com/products/extcore/ [2] http://www.assembla.com/spaces/liftweb/tickets/132 [3] http://www.extjs.com/products/floss-exception.php On Wed, Mar 10, 2010 at 1:55 PM, Marius marius.dan...@gmail.com wrote: Please see here http://groups.google.com/group/liftweb/browse_thread/thread/5e4f5e424d33db40/32cfb6752954?lnk=gstq=ExtJs#32cfb6752954 I'd strongly encourage you to integrate ExtJs with Lift and potentially other frameworks. Depending on JS library licence we'd be happy to have integrations with other JS frameworks. JsArtifacts should provide you the necessary abstractions for such integrations but if you run into problems, please let us know. On Mar 10, 8:27 am, Jim Barrows jim.barr...@gmail.com wrote: On Tue, Mar 9, 2010 at 8:45 PM, aw anth...@whitford.com wrote: It is time for me to add some serious widgets to my lift app. So far, I am most enamored by ExtJS. Another alternative could possibly be ZK. Does anybody have any experience with these frameworks? Can you comment on why integrating them with Scala/Lift would be a bad idea (or not work)? I searched for some historical posts on ExtJS and discovered some threads about it's license and how it impacts inclusion in the lift framework. Would a commercial license prohibit it from being a lift- widget submodule candidate? Does anybody have a better suggestion that you think can compete with ExtJS? I'm using ExtJS in anger at 0rk. 3.1.1 is nice. 3.0.0 is weird. Some odd bugs being reported. We're also getting some weird interactions with some other js libraries ( I won't mention it, it's not available anymore, and if it was it just leave you scarred) and CSS. However, that's the other libraries fault more then ExtJS's. If you want something that looks and feels as close to a desktop app as you can get.. ExtJS can do the job well. With Lift providing the JSON, it would be hard to go wrong. That said.. ExtJS is not an easy beast to learn. It's even worse to try and L10N it easily. I would not try and use just pieces of it, it's really not designed to do that. It seems to me to be an all or nothing approach. That's not say you can't use it piecemeal, I think you lose a lot of flexibility (especially in layout) that way. I wouldn't use it if left to my own devices though, unless I had a requirement for a desktop app on the web. It's serious overkill. -- James A Barrows -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email
Re: [Lift] Re: Serious widget action
On Wed, Mar 10, 2010 at 8:02 AM, Timothy Perrett timo...@getintheloop.euwrote: If you've already decided on ExtJS, why don't you just go use it? Dirk from Ext was originally going to do ExtJS integration, but he has disappeared into the ether never to be seen again. Yeah... I gotta ping him. He's also got some translation tickets open. You could always start an integration module on github and go from there... Cheers, Tim On Mar 10, 3:29 pm, aw anth...@whitford.com wrote: On Mar 10, 1:15 am, Timothy Perrett timo...@getintheloop.eu wrote: Personally, I would say forget ExtJS, compared to Cappuccino its streets behind: http://cappuccino.org/ Easily the most exciting UI framework out there right now Perhaps I should add that I need sophisticated grids: http://www.extjs.com/deploy/dev/examples/#sample-3 A bunch of options like JQuery UI, YUI, and from what I see from Cappuccino don't seam to come close to the kind of widget sophistication that I am seeing in ExtJS. Hence, ExtJS is my front runner. (Flex is ultimately competition, but I don't like dealing with Flash.) I have a sprinkling of JQuery usage in my app already, and my initial thought was to simply use the JQuery adapter for ExtJS. Alternatively, I could probably just rewrite my JQuery code in ExtJS -- assuming then I would take the route to provide a jsArtifact for ExtJS. My real concern is factors like security and leveraging things like SHtml.link -- I don't want an oil and water scenario. I still need to deep dive into ExtJS, but wanted to float the idea in case someone was aware of a red flag before I wasted too much time. It doesn't sound like anybody is using ZK [1], eh? [1]http://zkoss.org/ -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: non-Lazy evaluation of bind FuncBindParam functions?
Thanks for the feedback. I'm not trying to be awkward here, just
trying to get my head around everything.
Oh, and I completely agree with the risks of premature optimisation.
Thanks,
Stuart
On Mar 10, 5:03 pm, David Pollak feeder.of.the.be...@gmail.com
wrote:
On Wed, Mar 10, 2010 at 7:22 AM, Stuart Roebuck
stuart.roeb...@gmail.comwrote:
Okay, so I now understand what is happening a little better.
When I saw a construct like:
bind(example,xhtml,
first_name - SHtml.text(user.first_name, user.first_name(_)),
last_name - SHtml.text(user.last_name, user.last_name(_))
it reminded me of a match with cases and my assumption was that each
match would only be called if and when the match was found. In reality
what appears to happen is that the item on the right hand side of the
- is usually evaluated and then placed into a Map with the String
like first_name being the key.
You're welcome to take up laziness vs. strictness with the EPFL team.
There's only so much we can do to be lazy and it does take extra syntax
(see Ross's reply).
So, if every binding is used in every case there is no big issue here,
but if you have bindings that aren't all used they will none-the-less
be evaluated every time you try to bind.
Also every time the bind function is called a new Map appears to be
generated and indexed in memory which doesn't seem as efficient as it
could be.
There's a sign over a urinal in a mens room at Google that reads Premature
Optimization is the root of all evil. Now, I think that's an
overstatement, but in this case, it's applicable.
Is there an *actual* problem with building a Map()? Can you measure the
problem? Do you have a more efficient solution?
Now, when I wrote that particular code, I was very cognizant of the
performance implications.
The cost of producing the Map() (backed by a HashMap) in the normal case (no
hash collisions) is O(n). Worst case is O(n log n).
For each element we're binding, we have look up the tag of the node to bind.
If we are using our Map(), the look-up time is O(1) (or worst case O(log
n)). If we have n elements that we're binding, the expected cost is O(n)
and worst case is O(n log n).
So, we have an algorithm that normally executes in 2xO(n) and worst case
2xO(n log n).
Now, if we didn't create the Map, we'd have to cycle through the possible
binds and we'd wind up with O(n ^ 2). Even if you have a PartialFunction
(pattern matching) against strings, it's O(n) to match the pattern.
So, would you rather have an O(n) algorithm that can degrade to O(n log n)
and uses marginally more memory or would you rather have an O(n ^ 2)
algorithm that uses marginally less memory?
And if you're worried about the memory used by the Map(), on pre 1.6 build
16 JVMs, the Map will not likely escape the Eden memory pool (which means
very quick GC). On the most recent JVMs, the escape analysis should kick in
and the Map and its elements will be allocated on the heap and never be
subject to GC.
I can't help but wonder whether this could be converted to a form of
match which would then be built at compile time and re-used and would
only evaluate those matches that matched.
In the event that you can create a benchmark and a real-world situation that
actually needs this, please open a ticket. But, I suspect that even if you
pre-created a Map and passed it into bind(), that the performance would be
nearly identical, but we'd have more public APIs to document which seems to
be something that also annoys you.
In the meantime I see that you can convert the code above to:
bind(example,xhtml,
FuncBindParam(first_name, () = SHtml.text(user.first_name,
user.first_name(_)),
FuncBindParam(last_name, () = SHtml.text(user.last_name,
user.last_name(_))
to get a form of lazy evaluation.
On Mar 10, 11:01 am, Stuart Roebuck stuart.roeb...@gmail.com wrote:
I've been trying to figure why some binding is giving me a stack
overflow and I've discovered that if you use the BindHelpers.bind
method with a set of function BindParams, all the functions are
evaluated regardless of whether a match is found.
So, for example, if you bind to an empty NodeSeq and have a BindParam
which will never match like:
you won't find me here - { print(Got here!);
NodeSeq.Empty }
…you find that the print statement is called.
This really surprised me. Is this intentional behaviour as it seems
to be a potential source of significant redundant processing?
Stuart.
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Re: [Lift] Re: Multiple stateful snippets in a page , keeping the common state?
The simplest answer is to use traits to define logic and when you have a page that's going to have multiple logic pieces that need to keep track of each other's state, mix the traits into a larger stateful snippet. I'm sorry that I've been giving you half-answers to a lot of your questions... I know you've stated parts of your problem in a number of different posts, but if I could trouble you to put together a more complete description of the pages, components and interactions, I can try to work up a complete example that might help. On Wed, Mar 10, 2010 at 8:02 AM, hexa hex...@gmail.com wrote: ok,, I don't want to put them in a single snippet since I want to be able to use them independently .. I could call one snippet from the other I guess this would work but just doesn't feel right... I would end up having to do one snippet per page to control the subsnippets... In fact i'm not sure how I can compose independent even non stateful snippets... without having an enclosing controler snippet Best would be if non-stateful snippets could find each other for example could I have something like lift::SnippetA lift:SnippetB /lift:SnippetB /lift::SnippetA And have snippet B find the snippet A instance ? and modify it's rendering based on it ? or something similar? This way my list Invoice could know what it's in a AddInvoice snippet and get the Client it must show the invoices for .. And otherwise just render all invoices... Having it in another context could make it render different things... Or would I really have to bind SnippetB inside SnippetA with chooseTemplate and directly call it's functions with the arguments I need ? and do this all top-down... rather then down-top... So basically I guess the question is how do you manage multiple snippets (non-stateful) so that they are the most independent from each other and that code can reused and scoped properly if they have any effect on each other and or that they can enclose each other... Maybe Im way off too ,, sorry , Help is much apreciated... I will try the ajax way too, and I guess I could repost the RequestVar.. need to try that too.. Thanks, hexa On Mar 10, 9:33 am, David Pollak feeder.of.the.be...@gmail.com wrote: The short answer is no. The slightly longer answer is Can you put both into a single snippet? The even longer answer is Have you tried using Ajax forms so you don't even leave the page? On Tue, Mar 9, 2010 at 10:19 PM, hexa hex...@gmail.com wrote: Hi, I have 2 Stateful snippets in a page : 1. a InvoiceList snippet that 1. If no client RequestVar is present lists all the invoices in the system 2. If a client RequestVar is present lists the invoices for that client 2. a AddInvoice snippet that displays a form and adds an invoice binded on the Client RequestVar.. Now these 2 can share the same RequestVar.. and that's fine for one request And at least in the case of 1 stateful snippet since I set the request var to a class var , it persists after a submit on the AddInvoice... the client persists But for the other snippet .. the state is lost... So is there a way to manage the common states of multiple snippets in a page ? Should I use a SessionVar ? I kinda would prefer not to since It's really not a var that should be persistent over the session The best would be that they both keep their state .. as an action is performed on one of them... Thanks a lot hexa -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com liftweb%2bunsubscr...@googlegroups.comliftweb%252bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web frameworkhttp://liftweb.net Beginning Scalahttp://www.apress.com/book/view/1430219890 Follow me:http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr
[Lift] Re: BSON support in lift-json
Hi,
Here's another idea which might work. It is a bit hackish and needs
further analysis, but small experiments I did were promising.
What if we change JsonAST just a little by adding a new abstract node
called JLiteral to represent simple nonstructural types (note, it is
sealed).
object JsonAST {
sealed abstract class JValue
sealed abstract class JLiteral extends JValue
case class JInt(value: BigInt) extends JLiteral
...
}
Then in a same source file extend that by adding BSON extensions.
object BsonAST {
abstract class JObjectId(val id: Long) extends JsonAST.JLiteral
...
object JObjectId {
def apply(id: Long) = new JObjectId(id) {}
def unapply(x: JObjectId): Option[Long] = Some(x.millis)
}
}
Note, BsonAST extension literals are not case classes but abstract
classes + manually coded extractors and factories. Now users of basic
JSON processing would not need to care about BSON extensions. For them
the pattern matcher would work as it works now. For instance
exhaustiveness checking still emits warnings if cases are incomplete.
BSON users can import BSON extensions and use extractors:
import JsonAST._
import BsonAST._
bson map {
case JInt(x) = ...
case JDate(t) = ...
...
}
Cheers Joni
On Mar 8, 8:38 pm, Ross Mellgren dri...@gmail.com wrote:
I personally think hybrid approaches make sense for certain designs even if
they are a little odd.
My thought originally was having a new member of the ADT which is not final
which represents extensions, e.g.
JValue
\_ JExtension
\_ JDate
where JExtensions could be ignored or passed through unchanged by most of the
stuff, and only special readers/writers would know what to do with them.
-Ross
On Mar 8, 2010, at 12:45 PM, David Pollak wrote:
On Mon, Mar 8, 2010 at 12:50 AM, Joni Freeman freeman.j...@gmail.com
wrote:
This is a tricky one. The problem with extending the AST is that the
AST is implemented as an algebraic data type. And by definition it is
not possible to extend such a type.
Just throwing an idea out and it's likely a bad one.
I ran into a similar issue with Box and chose to do a hybrid (aka
Frankenstein) ADT/OO paradigm.
Perhaps it's possible to provide subclasses of certain ADT items (e.g.,
JDate extends JInt) such that if you pattern match on a JInt, you get the
millis as long, but if you pattern match against JDate, you get a date
extracted if it's the JDate subclass.
Once again, it's likely to be a bad idea as it caused a lot of angst in Box
and I'm not sure if the paradigm is one that's worth perpetuating.
One way to add BSON support is to create a new AST for it which
includes all extended literals. Then add a few core functions for that
ADT (map, etc.) and maybe a function which can encode BSON as JSON
(bvalue.toJson). Encoding BSON as JSON would give some features for
free, for instance toXml. Anyway, this approach would probably cause
some code duplication between lift-json and lift-bson.
Converting the JSON AST to an object oriented design would be another
approach. Then adding new AST nodes would not be a problem. But that
would be a huge change to the lib. Probably too big at this phase.
Since BSON is a superset of JSON we could refactor current lift-json
to be lift-bson and then implement lift-json on top of it. On a
cursory look this feels cleanest but there might be some performance
penalties for normal JSON processing due to conversions.
To be honest, I'm not yet sure what would be the best approach.
Cheers Joni
On Mar 5, 10:08 pm, Ross Mellgren dri...@gmail.com wrote:
The JSON stuff is mostly just an AST and encoding/decoding from the JSON
wire format is almost just an addon. Then, it would be a matter of adding
AST objects for those new things. Could be a use for phantom types ;-)
I'd be interested to hear Joni's view on how it might fit, since he's the
most familiar.
-Ross
On Mar 5, 2010, at 1:26 PM, Tim Nelson wrote:
I definitely agree with keeping the BSON code separate or possibly
having a strict JSON mode.
Tim
On Fri, Mar 5, 2010 at 12:13 PM, Timothy Perrett
timo...@getintheloop.eu wrote:
Probably a sub-ordinate module would be preferable... one that builds
on the lift-json stuff and doesn't pollute the normal JSON usage.
Joni, what are your thoughts?
Cheers, Tim
On 5 Mar 2010, at 17:59, Tim Nelson wrote:
I finally had the opportunity to look into the couchdb code and I must
say it is rather impressive.
I would like to utilize the code in JSONRecord.scala in scamongo [1].
However, MongoDB uses a variation of JSON they call BSON, which they
actually just published a spec [2] for, due to interest outside of
MongoDB. Basically, it adds support for date, ObjectId [3], binary
data, regular expressions, and code (JavaScript) data types.
My question is, what would it take to add support
[Lift] Not Sure How to Arrange Mapper Classes or QueryParams to Handle My Data Model.
My entities are like Programmers and Projects. There is a many to many
relationship between Programmers and Projects, but the relationship
has an attribute for type. Examples of relationship types are
Develops, Manages, Maintains, Tests, etc. In a traditional relational
db there would be a join table containing the type of relationship as
well as foreign keys to both Programmer and Project. I would like to
run queries such as what projects does this programmer develop?
which loosely translates to the following SQL:
SELECT * FROM projects WHERE programmer.id ==
programmer_project.programmer_id programmer_project.project_id ==
project.id programmer_project.type == Develops programmer.id
== thisProgrammerId;
So far, I gave up on the ManyToMany Mapper because I could not figure
out how to add an attribute to the join table. The join table seemed
to be hidden away.
What I have now is both Programmer and Project extending OneToMany,
where the many side is a ProgrammerProject class. Something like:
...
class Programmer extends LongKeyedMapper[Programmer] with
OneToMany[Long, Programmer] {
...
object programmerProjects extends MappedOneToMany(ProgrammerProject,
ProgrammerProject.programmer) with Owned[ProgrammerProject] with
Cascade[ProgrammerProject]
...
}
...
class Project extends LongKeyedMapper[Project] with OneToMany[Long,
Project] {
...
object programmerProjects extends MappedOneToMany(ProgrammerProject,
ProgrammerProject.project) with Owned[ProgrammerProject] with
Cascade[ProgrammerProject]
...
}
object RelationshipType extends Enumeration {
val Develops = new Val(1, Develops)
val Manages = new Val(2, Manages)
}
...
class ProgrammerProject extends LongKeyedMapper[ProgrammerProject] {
...
object relationshipType extends MappedEnum(this, RelationshipType)
object programmer extends LongMappedMapper(this, Programmmer)
object project extends LongMappedMapper(this, Project)
}
This arrangement isnt terrific, but it would be okay if I could
construct valid QueryParams. I would expect something like the
following to work:
Project.findAll(In(Project.id, ProgrammerProject.project,
In(ProgrammerProject.programmer,
Programmer.id,
By(ProgrammerProject.relationshipType,
RelationshipType.Develops
But it doesnt. Any advice would be most appreciated
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[Lift] Re: Multiple stateful snippets in a page , keeping the common state?
You've been very helpful really! I need to make my part now and read both the scala lift book , properly And experiment but at least now I have solution tails to follow :) Thanks again hexa On Mar 10, 12:22 pm, David Pollak feeder.of.the.be...@gmail.com wrote: The simplest answer is to use traits to define logic and when you have a page that's going to have multiple logic pieces that need to keep track of each other's state, mix the traits into a larger stateful snippet. I'm sorry that I've been giving you half-answers to a lot of your questions... I know you've stated parts of your problem in a number of different posts, but if I could trouble you to put together a more complete description of the pages, components and interactions, I can try to work up a complete example that might help. On Wed, Mar 10, 2010 at 8:02 AM, hexa hex...@gmail.com wrote: ok,, I don't want to put them in a single snippet since I want to be able to use them independently .. I could call one snippet from the other I guess this would work but just doesn't feel right... I would end up having to do one snippet per page to control the subsnippets... In fact i'm not sure how I can compose independent even non stateful snippets... without having an enclosing controler snippet Best would be if non-stateful snippets could find each other for example could I have something like lift::SnippetA lift:SnippetB /lift:SnippetB /lift::SnippetA And have snippet B find the snippet A instance ? and modify it's rendering based on it ? or something similar? This way my list Invoice could know what it's in a AddInvoice snippet and get the Client it must show the invoices for .. And otherwise just render all invoices... Having it in another context could make it render different things... Or would I really have to bind SnippetB inside SnippetA with chooseTemplate and directly call it's functions with the arguments I need ? and do this all top-down... rather then down-top... So basically I guess the question is how do you manage multiple snippets (non-stateful) so that they are the most independent from each other and that code can reused and scoped properly if they have any effect on each other and or that they can enclose each other... Maybe Im way off too ,, sorry , Help is much apreciated... I will try the ajax way too, and I guess I could repost the RequestVar.. need to try that too.. Thanks, hexa On Mar 10, 9:33 am, David Pollak feeder.of.the.be...@gmail.com wrote: The short answer is no. The slightly longer answer is Can you put both into a single snippet? The even longer answer is Have you tried using Ajax forms so you don't even leave the page? On Tue, Mar 9, 2010 at 10:19 PM, hexa hex...@gmail.com wrote: Hi, I have 2 Stateful snippets in a page : 1. a InvoiceList snippet that 1. If no client RequestVar is present lists all the invoices in the system 2. If a client RequestVar is present lists the invoices for that client 2. a AddInvoice snippet that displays a form and adds an invoice binded on the Client RequestVar.. Now these 2 can share the same RequestVar.. and that's fine for one request And at least in the case of 1 stateful snippet since I set the request var to a class var , it persists after a submit on the AddInvoice... the client persists But for the other snippet .. the state is lost... So is there a way to manage the common states of multiple snippets in a page ? Should I use a SessionVar ? I kinda would prefer not to since It's really not a var that should be persistent over the session The best would be that they both keep their state .. as an action is performed on one of them... Thanks a lot hexa -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com liftweb%2bunsubscr...@googlegroups.comliftweb%252bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web frameworkhttp://liftweb.net Beginning Scalahttp://www.apress.com/book/view/1430219890 Follow me:http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web frameworkhttp
Re: [Lift] Not Sure How to Arrange Mapper Classes or QueryParams to Handle My Data Model.
With ManyToMany the join table is defined by you, manually as a regular mapper.
You have to tell MappedManyToMany about it and its foreign keys.
I will try to find time to make the wiki entry more clear.
Also, if the scaladocs are lacking let me know how they could be improved.
-
Matyjasmaty...@gmail.com wrote:
My entities are like Programmers and Projects. There is a many to many
relationship between Programmers and Projects, but the relationship
has an attribute for type. Examples of relationship types are
Develops, Manages, Maintains, Tests, etc. In a traditional relational
db there would be a join table containing the type of relationship as
well as foreign keys to both Programmer and Project. I would like to
run queries such as what projects does this programmer develop?
which loosely translates to the following SQL:
SELECT * FROM projects WHERE programmer.id ==
programmer_project.programmer_id programmer_project.project_id ==
project.id programmer_project.type == Develops programmer.id
== thisProgrammerId;
So far, I gave up on the ManyToMany Mapper because I could not figure
out how to add an attribute to the join table. The join table seemed
to be hidden away.
What I have now is both Programmer and Project extending OneToMany,
where the many side is a ProgrammerProject class. Something like:
...
class Programmer extends LongKeyedMapper[Programmer] with
OneToMany[Long, Programmer] {
...
object programmerProjects extends MappedOneToMany(ProgrammerProject,
ProgrammerProject.programmer) with Owned[ProgrammerProject] with
Cascade[ProgrammerProject]
...
}
...
class Project extends LongKeyedMapper[Project] with OneToMany[Long,
Project] {
...
object programmerProjects extends MappedOneToMany(ProgrammerProject,
ProgrammerProject.project) with Owned[ProgrammerProject] with
Cascade[ProgrammerProject]
...
}
object RelationshipType extends Enumeration {
val Develops = new Val(1, Develops)
val Manages = new Val(2, Manages)
}
...
class ProgrammerProject extends LongKeyedMapper[ProgrammerProject] {
...
object relationshipType extends MappedEnum(this, RelationshipType)
object programmer extends LongMappedMapper(this, Programmmer)
object project extends LongMappedMapper(this, Project)
}
This arrangement isnt terrific, but it would be okay if I could
construct valid QueryParams. I would expect something like the
following to work:
Project.findAll(In(Project.id, ProgrammerProject.project,
In(ProgrammerProject.programmer,
Programmer.id,
By(ProgrammerProject.relationshipType,
RelationshipType.Develops
But it doesnt. Any advice would be most appreciated
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[Lift] How do I add unique id to radio inputs for labels?
I'd like to add in an id attribute to my radio button inputs so I can add labels. Something like: SHtml.radio( Opinons.elements.toList.map(_.toString), opinion.map(_.toString), selected = opinion( Box(Opinions.valueOf(selected)) ), (id, /*I want a unique id here...preferably the key or hashcode*/) ) Thanks, Strom -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] More dynamic Lift
David Pollak feeder.of.the.be...@gmail.com writes:
Folks,
I spent today cracking the code on how to implement a more dynamic Lift
development cycle.
Awesome!
Specifically, I figured out how to support (during development mode)
having changes in compiled code reflected in the running application.
The change to your Lift app will be a change in how you do things in
Boot.scala. Basically, anything that could change between page loads
will be wrapped as such in Boot:
LiftRules.dynamicDevelopmentMode(List(com.liftcode.model,
com.liftcode.lib))(() = {
LiftRules.dispatch.append {...}
LiftRules.setSiteMap()
})
The list is a list of packages to exclude from the dynamic reloading.
Because schemification isn't going to happen on every page reload, it's best
not to reload the models.
The dynamic mode will impose the following limitations:
- Lift will only service one request at once in development mode
I think I can live with that
- Page loads in development mode will be 10x-50x slower than in
non-development mode
Is this always or just when code has changed? If always, this may be a
bit dramatic increase :-)
- Comet objects will not change once they've been instantiated -
There will cases where classes created in one classloader are not
recognized as the same class for casting and/or pattern matching
purposes if the classes are created across calls - There may be
problems related to running out of PermGen space because each page
reload will cause all the applications classes to be reloaded...
and this may happen faster than the classes are GCed.
With those limitations, do you guys thing the feature would be
valuable?
As the one who probably initiated this, yes :-) I'm still unsure about
how well it works in practice. Only time will tell. It looks like it
doesn't need JRebel, which I think many consider really useful for doing
rapid development. I wonder if page/loads etc can be improved if JRebel
was used?
I think the important part now is to get the ball rolling an try it out
in real life. If the model is sound, the implementation can be
improved
Should it be part of development mode or should there be another demarcation
of the dynamic reload mode?
On first look, it seems if one doesn't use dynamicDevelopmentMode there
are no drawbacks? If that's the case, I don't see the need for another
demarcation.
/Jeppe
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[Lift] Re: RequestVar copy /clone ?
Is this currentClient(Full (c)), Text (Ajouter Facture)) called on
page X and ViewClient.add snippet on page Y?
If you want to preserve state between pages than you should use
SessionVars.
I don't know what Destination Post snippet means.
On Mar 9, 8:13 am, hexa hex...@gmail.com wrote:
Hi,
I have a RequestVar that I send to a snippet which will then do a
post...
But I would like the RequestVar to persist between the moment it it
received in the post snippet and the post itself...
The only way I found of doing it right now is like :
Source Snippet :
object ViewClient extends ViewClient
class ViewClient
{
object currentClient extends RequestVar [Box [Client]] (Empty)
bind (...
addInvoice - SHtml.link (/invoice/create, () = currentClient
(Full (c)), Text (Ajouter Facture)))
Destination Post Snippet :
def add (inhtml: NodeSeq) : NodeSeq = {
val inInvoice = Invoice.create
val clientBox = ViewClient.currentClient
val client_id = clientBox map (_.id.toLong)
def processEntry () {
Client.findByKey (client_id openOr 0) map (inInvoice.client (_))
inInvoice.save
S.notice (Entre : Description + inInvoice.description +
Montant : + inInvoice.amount)
}
bind (e, inhtml,
description - inInvoice.description.toForm,
amount - inInvoice.amount.toForm,
submit - SHtml.submit (Ajouter Facture, processEntry))
If I try to access the clientBox in processEntry, even with the
closure it should generate.. I get an empty box...
Is there any way to copy / ref or anything or make a new RequestVar
with a copy of the preceding one ?
Would have been nice not to be obligated to do the client_id toLong
code...
And juste do inInvoice.client (client) , inInvoice.save
Thanks a lot
hexa
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Re: [Lift] More dynamic Lift
Le 09/03/2010 01:51, David Pollak a écrit : Folks, [...] With those limitations, do you guys thing the feature would be valuable? Should it be part of development mode or should there be another demarcation of the dynamic reload mode? There will always be limitation, and I think that everything allowing to move development cycle (especially at the beginning of a site or page) closer to change code - reload page in browser - view result is good. Limitation have to be known and written down in some doc somewhere so that people why they get OOM erros, but as long as that is done, they are ok with me. On the other hand, others spoke about JRebel. Perhaps it would be less impacting performance wise to write a Lift plugin for it ? -- Francois Armand http://fanf42.blogspot.com -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: More dynamic Lift
I'm afraid I agree with Marius... I'm just not sure on the benefit
here over JRebel?
Cheers, Tim
Sent from my iPhone
On 9 Mar 2010, at 08:05, Marius marius.dan...@gmail.com wrote:
I'm having seconds thoughts about this. Development mode can mean
slightly different things depending on the nature of the application.
The things you enlisted are for me only PROS for not including this
feature.
Sorry but personally I don't see much value in this approach ... but
this doesn't mean other people wont. Yes JavaRebel is not perfect but
it does its job quite good and it is really helpful in most cases.
On Mar 9, 2:51 am, David Pollak feeder.of.the.be...@gmail.com wrote:
Folks,
I spent today cracking the code on how to implement a more
dynamic Lift
development cycle. Specifically, I figured out how to support
(during
development mode) having changes in compiled code reflected in the
running
application. The change to your Lift app will be a change in how
you do
things in Boot.scala. Basically, anything that could change
between page
loads will be wrapped as such in Boot:
LiftRules.dynamicDevelopmentMode(List(com.liftcode.model,
com.liftcode.lib))(() = {
LiftRules.dispatch.append {...}
LiftRules.setSiteMap()
})
The list is a list of packages to exclude from the dynamic reloading.
Because schemification isn't going to happen on every page reload,
it's best
not to reload the models.
The dynamic mode will impose the following limitations:
- Lift will only service one request at once in development mode
- Page loads in development mode will be 10x-50x slower than in
non-development mode
- Comet objects will not change once they've been instantiated
- There will cases where classes created in one classloader are
not
recognized as the same class for casting and/or pattern matching
purposes if
the classes are created across calls
- There may be problems related to running out of PermGen space
because
each page reload will cause all the applications classes to be
reloaded...
and this may happen faster than the classes are GCed.
With those limitations, do you guys thing the feature would be
valuable?
Should it be part of development mode or should there be another
demarcation
of the dynamic reload mode?
Thanks,
David
--
Lift, the simply functional web frameworkhttp://liftweb.net
Beginning Scalahttp://www.apress.com/book/view/1430219890
Follow me:http://twitter.com/dpp
Surf the harmonics
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Re: [Lift] Re: More dynamic Lift
On Tue, Mar 9, 2010 at 9:33 AM, Timothy Perrett timo...@getintheloop.eu wrote: I'm afraid I agree with Marius... I'm just not sure on the benefit here over JRebel? My main pain point was changes to Sitemap. JRebel doesn't help you here as it's fixed once Lift is booted... /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] field without mapper and Form validation
Hello guys, I'm often using forms without anything to do persistence and RDBMS related, but I would like to be able to use Fields (StringField, EmailField, my owns, etc), validation, error management, etc. without having everything to manage by hand. Actually, I would like to be able to use fields without backend but with all the domain - client part. Is it possible ? I thought that wizards may have been the answer, but it seems that they use mappers. In a second point, I would like to know if there is a way to have standard hooks defined along a form processing request, like onPrepare (init fields), onValidate (field cross validation), onFormSuccess/Error (clean error, field from session, save), etc, and with something to store validation errors. How does Lift handle that ? Perhaps it's just some convention to follow like prepare=snippet instanciation, validation=when the submit closure is called, onerror=if the error tracker object has registered errors, etc. If so what are the one you are following ? Form handling, with validation, is a part that is still a little fuzzy for me, and I would love to have a more systematic way to handle it than in a case by case basis. Thanks ! -- Francois ARMAND http://fanf42.blogspot.com -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: More dynamic Lift
BTW, with SBT, don't forget you can do: jetty-run (make changes to your code) prepare-webapp That will redeploy chnaged files / classses to the running jetty instance so development with SBT can still be slick without javarebel :-) Lift is really elegant - some how, this approach feels pretty ugly. I haven't looked at it, but no doubt it's using some classloader trickery? Cheers, Tim Sent from my iPhone On 9 Mar 2010, at 10:45, Lukasz Kuczera kuk...@gmail.com wrote: But on the other hand it happens not too often. I'm personally very very happy with current productiveness using Lift + Jetty + JRebel. But what happens when Zeroturnaround will turn back to Scala ? It is quite possible that Scala will go mainstream. It might be viable solution then. Simple solution would be putting Menu building just before page rendering in development mode. But i can live perfectly without that as well (using JRebel). On Mar 9, 9:37 am, Jeppe Nejsum Madsen je...@ingolfs.dk wrote: On Tue, Mar 9, 2010 at 9:33 AM, Timothy Perrett timo...@getintheloop.eu wrote: I'm afraid I agree with Marius... I'm just not sure on the benefit here over JRebel? My main pain point was changes to Sitemap. JRebel doesn't help you here as it's fixed once Lift is booted... /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en . -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: How to use lazy-load?
I assume you are using Lift from master ... lazy-load should be able to wrap anything. I'll try to put in some ajaxSelects to see if I can repro. On Mar 8, 10:54 pm, Jeppe Nejsum Madsen je...@ingolfs.dk wrote: On Mon, Mar 8, 2010 at 5:42 PM, Marius marius.dan...@gmail.com wrote: Can you please send me a minimalistic example ? .. The comet actor shutdown looks correct to me as after the lazy content is rendered that comet is not needed anymore. Not easily. When I get some time I'll see if I can reproduce it in a sample. Can you check with firebug if you get any asynchronous javascript back from the comet request? It looks a bit strange. The normal request (with not lazy load) is about 3s. With the lazy load the comet request is almost 60s before anything (not the correct content) is returned (timed out?) Hold on! I did some more digging :-) Since this was just a naive application of lazy-load around an existing snippet, it contained bind with a few ajaxSelects inside. It seems this is what caused the problems. If I remove the ajaxSelects it seems to work. Not sure if this is a supported scenario or not, but if not we should probably emit some notification when running in dev mode.or at least document what can be put inside lazy-load /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: RequestVar copy /clone ?
IMHO you have three options:
1. Use statefull snippet
2. Use SessionVar.
3. User RequestVar.
I went for third option. Because I don't need to retain this value
between multiple requests.
In my code i use something like:
object Index {
object postidVar extends RequestVar(S.param(postid).map(_.toLong)
openOr 0L)
def postid: Long = postidVar.is
}
This gives me global access to RequestVar. Then i use it with
something like:
/**
* Renders post in details.
* @param in
* @return
*/
def show(in: NodeSeq): NodeSeq = {
Post.find(Index.postid) match {
case Full(post) = bind(post,in,
title-post.title,
text - post.text,
date - (new SimpleDateFormat(Const.format)
format
post.date.get))
case Empty = Text(No such post)
case Failure(_,_,_) = S.redirectTo(/failure.html)
}
}
I set it with:
if(User.loggedIn_?) SHtml.link(/edit, ()= Index.postidVar(post.id),
Text(Edit)) else Text()
Or with:
SHtml.link(/details.html,()=Index.postidVar(post.id),Text(Read
more))
And in another snipped I use it like:
def edit(in: NodeSeq): NodeSeq = {
var title =
var text =
var tags =
var post = Post.find(Index.postid)
def submit() = {
if(title==) S.error(Title musn't be empty)
else {
post.open_!.title(title).text(text).save
S.redirectTo(/index)
}
}
post match {
case Full(p) = bind(post,in,
title - SHtml.text(p.title, parm =
title=parm,
(size,55)),
tags - SHtml.text(, parm =
tags=parm),
text - SHtml.textarea(p.text, parm
= text=parm),
submit - SHtml.submit(Save, submit)
)
case Empty = S.error(Post to edit not found);
S.redirectTo(/
index)
}
You can check the code here:
http://github.com/kukems/lift-blog
What i would suggest to change clientBox definition from
object currentClient extends RequestVar [Box [Client]] (Empty)
to:
object currentClient extends
RequestVar(S.param(client_id).map(_.toLong) openOr -1L)
I assume that you don't have anything in database that match Client.id
== -1
Then you can use currentClient as:
Client findByKey currentClient.is map inInvoice.client (_)
On Mar 9, 7:13 am, hexa hex...@gmail.com wrote:
Hi,
I have a RequestVar that I send to a snippet which will then do a
post...
But I would like the RequestVar to persist between the moment it it
received in the post snippet and the post itself...
The only way I found of doing it right now is like :
Source Snippet :
object ViewClient extends ViewClient
class ViewClient
{
object currentClient extends RequestVar [Box [Client]] (Empty)
bind (...
addInvoice - SHtml.link (/invoice/create, () = currentClient
(Full (c)), Text (Ajouter Facture)))
Destination Post Snippet :
def add (inhtml: NodeSeq) : NodeSeq = {
val inInvoice = Invoice.create
val clientBox = ViewClient.currentClient
val client_id = clientBox map (_.id.toLong)
def processEntry () {
Client.findByKey (client_id openOr 0) map (inInvoice.client (_))
inInvoice.save
S.notice (Entre : Description + inInvoice.description +
Montant : + inInvoice.amount)
}
bind (e, inhtml,
description - inInvoice.description.toForm,
amount - inInvoice.amount.toForm,
submit - SHtml.submit (Ajouter Facture, processEntry))
If I try to access the clientBox in processEntry, even with the
closure it should generate.. I get an empty box...
Is there any way to copy / ref or anything or make a new RequestVar
with a copy of the preceding one ?
Would have been nice not to be obligated to do the client_id toLong
code...
And juste do inInvoice.client (client) , inInvoice.save
You have to check it because it might be null/empty. Lift can't figure
out what to do when there is no value inside the Box. In Java typical
idiom is to return null which impose getting NullPointerException at
some point OR checking explicitly for null value which you do exactly
with openOr method.
Thanks a lot
hexa
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Re: [Lift] Re: More dynamic Lift
On Tue, Mar 9, 2010 at 12:08 PM, Timothy Perrett timo...@getintheloop.eu wrote: BTW, with SBT, don't forget you can do: jetty-run (make changes to your code) prepare-webapp That will redeploy chnaged files / classses to the running jetty instance so development with SBT can still be slick without javarebel :-) But still this doesn't address the problem (I think?) of changing things in Boot. Maybe I code differently from everybody else, but when iterating new features, I always end up making lots of changes to Sitemap. And afaik everyone of those changes requires a restart For the rest I agree JRebel fits quite nicely (it does have it's problems as David points out) /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: More dynamic Lift
But on the other hand it happens not too often. I'm personally very very happy with current productiveness using Lift + Jetty + JRebel. But what happens when Zeroturnaround will turn back to Scala ? It is quite possible that Scala will go mainstream. It might be viable solution then. Simple solution would be putting Menu building just before page rendering in development mode. But i can live perfectly without that as well (using JRebel). On Mar 9, 9:37 am, Jeppe Nejsum Madsen je...@ingolfs.dk wrote: On Tue, Mar 9, 2010 at 9:33 AM, Timothy Perrett timo...@getintheloop.eu wrote: I'm afraid I agree with Marius... I'm just not sure on the benefit here over JRebel? My main pain point was changes to Sitemap. JRebel doesn't help you here as it's fixed once Lift is booted... /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: Issue, The URL params can't contains ? ****
I want get the these strings ( http://test.com/file.zip12345678 ) from the URL (http://localhost:8080/download.html?link=http://test.com/ file.zip12345678) Thanks very much! Cheers, Neil -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Issue, The URL params can't contains ? ****
Hi all, I have a silly question about the URL rewrite . How to let the URL params can contains the character. Here is the code: ### The url rewrite. case RewriteRequest( ParsePath(List(download, link), html, _, _), GetRequest, _) = RewriteResponse(List(download), Map(link - link)) ### When i input this link and get these value that the link param can't contains the char. http://localhost:8080/download.html?link=http://test.com/file.zip12345678 The link param is: (that doesn't contains the char in the param) S.param(link) = http://test.com/file.zip So how can i get the 12345678 value from the link param ? Maybe the URL rewrite is not correctly ? Thanks for any help! Cheers, Neil -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: RequestVar copy /clone ?
Redirect means the destination will execute in another request.
However, redirectTo takes, as an optional second parameter, a function to
execute in that new request. So try setting the RequestVar there.
-
Lukasz Kuczerakuk...@gmail.com wrote:
IMHO you have three options:
1. Use statefull snippet
2. Use SessionVar.
3. User RequestVar.
I went for third option. Because I don't need to retain this value
between multiple requests.
In my code i use something like:
object Index {
object postidVar extends RequestVar(S.param(postid).map(_.toLong)
openOr 0L)
def postid: Long = postidVar.is
}
This gives me global access to RequestVar. Then i use it with
something like:
/**
* Renders post in details.
* @param in
* @return
*/
def show(in: NodeSeq): NodeSeq = {
Post.find(Index.postid) match {
case Full(post) = bind(post,in,
title-post.title,
text - post.text,
date - (new SimpleDateFormat(Const.format)
format
post.date.get))
case Empty = Text(No such post)
case Failure(_,_,_) = S.redirectTo(/failure.html)
}
}
I set it with:
if(User.loggedIn_?) SHtml.link(/edit, ()= Index.postidVar(post.id),
Text(Edit)) else Text()
Or with:
SHtml.link(/details.html,()=Index.postidVar(post.id),Text(Read
more))
And in another snipped I use it like:
def edit(in: NodeSeq): NodeSeq = {
var title =
var text =
var tags =
var post = Post.find(Index.postid)
def submit() = {
if(title==) S.error(Title musn't be empty)
else {
post.open_!.title(title).text(text).save
S.redirectTo(/index)
}
}
post match {
case Full(p) = bind(post,in,
title - SHtml.text(p.title, parm =
title=parm,
(size,55)),
tags - SHtml.text(, parm =
tags=parm),
text - SHtml.textarea(p.text, parm
= text=parm),
submit - SHtml.submit(Save, submit)
)
case Empty = S.error(Post to edit not found);
S.redirectTo(/
index)
}
You can check the code here:
http://github.com/kukems/lift-blog
What i would suggest to change clientBox definition from
object currentClient extends RequestVar [Box [Client]] (Empty)
to:
object currentClient extends
RequestVar(S.param(client_id).map(_.toLong) openOr -1L)
I assume that you don't have anything in database that match Client.id
== -1
Then you can use currentClient as:
Client findByKey currentClient.is map inInvoice.client (_)
On Mar 9, 7:13 am, hexa hex...@gmail.com wrote:
Hi,
I have a RequestVar that I send to a snippet which will then do a
post...
But I would like the RequestVar to persist between the moment it it
received in the post snippet and the post itself...
The only way I found of doing it right now is like :
Source Snippet :
object ViewClient extends ViewClient
class ViewClient
{
object currentClient extends RequestVar [Box [Client]] (Empty)
bind (...
addInvoice - SHtml.link (/invoice/create, () = currentClient
(Full (c)), Text (Ajouter Facture)))
Destination Post Snippet :
def add (inhtml: NodeSeq) : NodeSeq = {
val inInvoice = Invoice.create
val clientBox = ViewClient.currentClient
val client_id = clientBox map (_.id.toLong)
def processEntry () {
Client.findByKey (client_id openOr 0) map (inInvoice.client (_))
inInvoice.save
S.notice (Entre : Description + inInvoice.description +
Montant : + inInvoice.amount)
}
bind (e, inhtml,
description - inInvoice.description.toForm,
amount - inInvoice.amount.toForm,
submit - SHtml.submit (Ajouter Facture, processEntry))
If I try to access the clientBox in processEntry, even with the
closure it should generate.. I get an empty box...
Is there any way to copy / ref or anything or make a new RequestVar
with a copy of the preceding one ?
Would have been nice not to be obligated to do the client_id toLong
code...
And juste do inInvoice.client (client) , inInvoice.save
You have to check it because it might be null/empty. Lift can't figure
out what to do when there is no value inside the Box. In Java typical
idiom is to return null which impose getting NullPointerException at
some point OR checking explicitly for null value which you do exactly
with openOr method.
Thanks a lot
hexa
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Re: [Lift] Re: More dynamic Lift
If the sitemap could be specified as a function JRebel could reload it. One approach is along the lines that setSiteMap could be passed a function e.g. ()=List[Menu]. In production mode the return value may or may not be cached. Another approach is to have an optional method in Boot called say buildSiteMap. If it's not defined you can build it imperatively in def boot. Or you can define buildSiteMap. In development mode it would be called on every page load. In production mode it could either be called once, or it could be called every time. Personally I see value in a dynamic, functional sitemap even in production, but it may impact performance (or not). - Jeppe Nejsum Madsenje...@ingolfs.dk wrote: On Tue, Mar 9, 2010 at 12:08 PM, Timothy Perrett timo...@getintheloop.eu wrote: BTW, with SBT, don't forget you can do: jetty-run (make changes to your code) prepare-webapp That will redeploy chnaged files / classses to the running jetty instance so development with SBT can still be slick without javarebel :-) But still this doesn't address the problem (I think?) of changing things in Boot. Maybe I code differently from everybody else, but when iterating new features, I always end up making lots of changes to Sitemap. And afaik everyone of those changes requires a restart For the rest I agree JRebel fits quite nicely (it does have it's problems as David points out) /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: Issue, The URL params can't contains ? ****
On Mar 9, 9:56 pm, Marius marius.dan...@gmail.com wrote: You need to do URL encoding first. Helpers.urlEcnode(str) does this. case RewriteRequest( ParsePath(List(download, link), html, _, _), GetRequest, _) = RewriteResponse(List(download), Map(link - Helpers.urlEncode(link) )) I add this code in here, but it doesn't work too. S.param(link) = Full(http://test.com/file.zip) Thanks! Cheers, Neil -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Converting a null String to an empty String
There was one in MappedString, but I think DPP's recent refactoring of common utilities for mapper etc. put it somewhere else (additionally, I assume). - Heiko Seebergerheiko.seeber...@googlemail.com wrote: Hi, I am pretty sure there is a method somewhere converting a null String to an empty String. But I have not found it yet ... Thanks, Heiko Company: weiglewilczek.com Blog: heikoseeberger.name Follow me: twitter.com/hseeberger OSGi on Scala: scalamodules.org Lift, the simply functional web framework: liftweb.net -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Converting a null String to an empty String
Can you be a little more specific? Are you saying that if you have a variable of type String that is a null reference that in certain cases, when that variable is in an xml literal, it becomes a zero length item, a Text(), or something else? Sorry for being pedantic, but I'm trying to understand both how to reproduce the issue and what you expect to happen. Thanks Connected by MOTOBLUR™ on T-Mobile -Original message- From: Heiko Seeberger heiko.seeber...@googlemail.com To: liftweb liftweb@googlegroups.com Sent: Tue, Mar 9, 2010 15:26:53 GMT+00:00 Subject: [Lift] Converting a null String to an empty String Hi, I am pretty sure there is a method somewhere converting a null String to an empty String. But I have not found it yet ... Thanks, Heiko Company: weiglewilczek.com Blog: heikoseeberger.name Follow me: twitter.com/hseeberger OSGi on Scala: scalamodules.org Lift, the simply functional web framework: liftweb.net -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Trouble with lift-couchdb
That took care of the compile issues. Thanks, Ross.
Craig
On Mar 8, 2010, at 11:05 PM, Ross Mellgren wrote:
So I looked into this as best I could and it seems to be a type inference
error where the compiler is inferring a too-loose type binding for EnumType
and therefore rejecting the assignment to a (supposedly) more specific
Box[TestEnum.Value].
I have no idea how to fix the code so it deduces the correct type or if I've
diagnosed the problem incorrectly; however, you can force the type:
object testEnum extends JSONEnumNameField[Settings, TestEnum.type](this,
TestEnum)
and that seems to make it happy. I tried this with 2.8.0.Beta1 also and it
appears that it also rejects it.
-Ross
On Mar 8, 2010, at 11:05 AM, Craig Blake wrote:
Writing into the database with the new field type works fine, but I'm
running into a little hitch trying to access the value. Given the test code
(again this is in the Github test project,
g...@github.com:craigwblake/lift-couchdb-test.git):
object TestEnum extends Enumeration { val One = Value( One)}
object Settings extends Settings with CouchMetaRecord[ Settings]
class Settings extends CouchRecord[ Settings] {
def meta = Settings
object testEnum extends JSONEnumNameField( this, TestEnum)
}
val settings = Settings.fetch( id).open_!
val testEnum: TestEnum.Value = settings.testEnum.valueBox.open_!
Results in a compilation error:
[ERROR] /lift-couchdb-test/src/main/scala/test/Testing.scala:24: error:
type mismatch;
[INFO] found : settings.testEnum.MyType
[INFO] required: test.TestEnum.Value
[INFO] val testEnum: TestEnum.Value =
settings.testEnum.valueBox.open_!
Any ideas?
Thanks,
Craig
On Mar 3, 2010, at 8:39 PM, Ross Mellgren wrote:
Try this:
/** Enum data field for JSON records. Encodes as JString */
class JSONEnumNameField[OwnerType : JSONRecord[OwnerType], EnumType :
Enumeration]
(rec: OwnerType, enum: EnumType)(implicit
enumValueType: Manifest[EnumType#Value])
extends EnumField[OwnerType, EnumType](rec, enum) with JSONField
{
def this(rec: OwnerType, enum: EnumType, value: EnumType#Value)(implicit
enumValueType: Manifest[EnumType#Value]) = {
this(rec, enum)
set(value)
}
def this(rec: OwnerType, enum: EnumType, value:
Box[EnumType#Value])(implicit enumValueType: Manifest[EnumType#Value]) = {
this(rec, enum)
setBox(value)
}
def asJValue: JValue = valueBox.map(v = JString(v.toString)) openOr
(JNothing: JValue)
def fromJValue(jvalue: JValue): Box[EnumType#Value] = jvalue match {
case JNothing|JNull if optional_? = setBox(Empty)
case JString(s) = setBox(enum.valueOf(s) ?~ (Unknown
value \ + s + \))
case other= setBox(expectedA(JString, other))
}
}
Let me know if it works for you. If so, I'll start the process of getting
it into master as soon as I can.
-Ross
On Mar 3, 2010, at 8:12 PM, Craig Blake wrote:
Sure, will do. The only thing I think I'll need to figure out is how to
persist an enumeration by name rather than ordinal value, but I imagine
that it should be pretty straight-forward to add a new field type in my
app to handle it.
Thanks,
Craig
On Mar 3, 2010, at 7:45 PM, Ross Mellgren wrote:
It's no problem, as I mentioned the compiler error is practically useless.
Hope you get along well, let me know if you have any other issues.
-Ross
On Mar 3, 2010, at 7:29 PM, Craig Blake wrote:
Yep, that seems to be better. Sorry for the noise, I don't know why I
didn't think to check that.
Thanks for the quick answer.
Craig
On Mar 3, 2010, at 4:44 PM, Ross Mellgren wrote:
Unfortunately the compiler error is bizarre (due to some of the type
shuffling involved), but the underlying problem you're experiencing is
that DateTimeFields (and therefore JSONDateTimeFields) have a storage
type of Calendar, and you're trying to assign a Date to them. Try
Calendar.getInstance instead of new Date() and see if that resolves it
for you?
-Ross
On Mar 3, 2010, at 4:32 PM, Craig Blake wrote:
Hi,
I am getting familiar with the lift-couchdb module, and trying to put
together a sample based on the tests in the module. Trying to create
a record, based on this test code:
def testRec1: Person = Person.createRecord.name(Alice).age(25)
this is what I have:
class Account extends CouchRecord[Account] {
def meta = Account
object created extends JSONDateTimeField(this)
}
object Account extends Account with CouchMetaRecord[Account]
...
val account = Account.createRecord.created(new Date())
I get a compilation error:
[WARNING] Test.scala:44: error: overloaded method value apply with
alternatives ((net.liftweb.common.Box[_12.MyType])test.Account)
forSome { val _12: object test.Account#created } and
((_13
Re: [Lift] Re: More dynamic Lift
No it doesn't work for sitemap... as thats loaded at boot only ;-) My point was that it can still be a good experience without JR for our users. Interesting what you were saying about your dev style... i'm usually the other way around and implement sitemap last as I see it as a concrete setting of my content. Cheers, Tim On 9 Mar 2010, at 11:20, Jeppe Nejsum Madsen wrote: On Tue, Mar 9, 2010 at 12:08 PM, Timothy Perrett timo...@getintheloop.eu wrote: BTW, with SBT, don't forget you can do: jetty-run (make changes to your code) prepare-webapp That will redeploy chnaged files / classses to the running jetty instance so development with SBT can still be slick without javarebel :-) But still this doesn't address the problem (I think?) of changing things in Boot. Maybe I code differently from everybody else, but when iterating new features, I always end up making lots of changes to Sitemap. And afaik everyone of those changes requires a restart For the rest I agree JRebel fits quite nicely (it does have it's problems as David points out) /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: Issue, The URL params can't contains ? ****
I think he means he wants to access query parameters. - Mariusmarius.dan...@gmail.com wrote: You need to do URL encoding first. Helpers.urlEcnode(str) does this. On Mar 9, 3:47 pm, Neil.Lv anim...@gmail.com wrote: Hi all, I have a silly question about the URL rewrite . How to let the URL params can contains the character. Here is the code: ### The url rewrite. case RewriteRequest( ParsePath(List(download, link), html, _, _), GetRequest, _) = RewriteResponse(List(download), Map(link - link)) ### When i input this link and get these value that the link param can't contains the char.http://localhost:8080/download.html?link=http://test.com/file.zip123... The link param is: (that doesn't contains the char in the param) S.param(link) =http://test.com/file.zip So how can i get the 12345678 value from the link param ? Maybe the URL rewrite is not correctly ? Thanks for any help! Cheers, Neil -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: Issue, The URL params can't contains ? ****
You need to do URL encoding first. Helpers.urlEcnode(str) does this. On Mar 9, 3:47 pm, Neil.Lv anim...@gmail.com wrote: Hi all, I have a silly question about the URL rewrite . How to let the URL params can contains the character. Here is the code: ### The url rewrite. case RewriteRequest( ParsePath(List(download, link), html, _, _), GetRequest, _) = RewriteResponse(List(download), Map(link - link)) ### When i input this link and get these value that the link param can't contains the char.http://localhost:8080/download.html?link=http://test.com/file.zip123... The link param is: (that doesn't contains the char in the param) S.param(link) =http://test.com/file.zip So how can i get the 12345678 value from the link param ? Maybe the URL rewrite is not correctly ? Thanks for any help! Cheers, Neil -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: field without mapper and Form validation
On Tue, Mar 9, 2010 at 3:17 PM, Francois fan...@gmail.com wrote: Le 09/03/2010 10:12, Francois a écrit : Hello guys, I'm often using forms without anything to do persistence and RDBMS related, but I would like to be able to use Fields (StringField, EmailField, my owns, etc), validation, error management, etc. without having everything to manage by hand. After searching more carefully on the mailing list archive, it seems that what I'm looking for is something like a mix of one-page wizard with Record/Mapper fields integration (or fields that are currently in Record/Mapper/Wizard may live in there own package and only manage the domain/client part ?) Relevant threads: - http://old.nabble.com/Multipage-wizards-td26504293.html (especially Jeppe answer) - http://old.nabble.com/Lift-Wizard-Fields-incompatible-with-lift-record-fields-tc27230782.html So, I'm going to see how wizards are working, Cool, let me know how it works. As you noted, I basically have the same needs, but haven't started to look into this yet :-) I saw the Lift example now includes a one page form (based on wizards): http://demo.liftweb.net/simple_screen /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: More dynamic Lift
On Mar 9, 1:08 pm, Timothy Perrett timo...@getintheloop.eu wrote: BTW, with SBT, don't forget you can do: jetty-run (make changes to your code) prepare-webapp That will redeploy chnaged files / classses to the running jetty instance so development with SBT can still be slick without javarebel :-) Lift is really elegant - some how, this approach feels pretty ugly. I haven't looked at it, but no doubt it's using some classloader trickery? Of course this is why one can get into cast failures as ProtectionDomain may change. I haven't seen Dave's code so he can provide more details of what he did. Cheers, Tim Sent from my iPhone On 9 Mar 2010, at 10:45, Lukasz Kuczera kuk...@gmail.com wrote: But on the other hand it happens not too often. I'm personally very very happy with current productiveness using Lift + Jetty + JRebel. But what happens when Zeroturnaround will turn back to Scala ? It is quite possible that Scala will go mainstream. It might be viable solution then. Simple solution would be putting Menu building just before page rendering in development mode. But i can live perfectly without that as well (using JRebel). On Mar 9, 9:37 am, Jeppe Nejsum Madsen je...@ingolfs.dk wrote: On Tue, Mar 9, 2010 at 9:33 AM, Timothy Perrett timo...@getintheloop.eu wrote: I'm afraid I agree with Marius... I'm just not sure on the benefit here over JRebel? My main pain point was changes to Sitemap. JRebel doesn't help you here as it's fixed once Lift is booted... /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com . For more options, visit this group athttp://groups.google.com/group/liftweb?hl=en . -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: field without mapper and Form validation
Le 09/03/2010 10:12, Francois a écrit : Hello guys, I'm often using forms without anything to do persistence and RDBMS related, but I would like to be able to use Fields (StringField, EmailField, my owns, etc), validation, error management, etc. without having everything to manage by hand. After searching more carefully on the mailing list archive, it seems that what I'm looking for is something like a mix of one-page wizard with Record/Mapper fields integration (or fields that are currently in Record/Mapper/Wizard may live in there own package and only manage the domain/client part ?) Relevant threads: - http://old.nabble.com/Multipage-wizards-td26504293.html (especially Jeppe answer) - http://old.nabble.com/Lift-Wizard-Fields-incompatible-with-lift-record-fields-tc27230782.html So, I'm going to see how wizards are working, Thanks, -- Francois ARMAND http://fanf42.blogspot.com -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Converting a null String to an empty String
Hi, I am pretty sure there is a method somewhere converting a null String to an empty String. But I have not found it yet ... Thanks, Heiko Company: weiglewilczek.com Blog: heikoseeberger.name Follow me: twitter.com/hseeberger OSGi on Scala: scalamodules.org Lift, the simply functional web framework: liftweb.net -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: How to use lazy-load?
Dear Jeppe, I spent some time today in looking to your issue. I was able to reproduce. The problem was that a NPE was thrown as the S,functionsMap was not initialized as I was doing a light S init to capture original request state. I have a fix for it but I need to do some more testing on it first. I'll open a ticket for this. Br's, Marius On Mar 9, 1:21 pm, Marius marius.dan...@gmail.com wrote: I assume you are using Lift from master ... lazy-load should be able to wrap anything. I'll try to put in some ajaxSelects to see if I can repro. On Mar 8, 10:54 pm, Jeppe Nejsum Madsen je...@ingolfs.dk wrote: On Mon, Mar 8, 2010 at 5:42 PM, Marius marius.dan...@gmail.com wrote: Can you please send me a minimalistic example ? .. The comet actor shutdown looks correct to me as after the lazy content is rendered that comet is not needed anymore. Not easily. When I get some time I'll see if I can reproduce it in a sample. Can you check with firebug if you get any asynchronous javascript back from the comet request? It looks a bit strange. The normal request (with not lazy load) is about 3s. With the lazy load the comet request is almost 60s before anything (not the correct content) is returned (timed out?) Hold on! I did some more digging :-) Since this was just a naive application of lazy-load around an existing snippet, it contained bind with a few ajaxSelects inside. It seems this is what caused the problems. If I remove the ajaxSelects it seems to work. Not sure if this is a supported scenario or not, but if not we should probably emit some notification when running in dev mode.or at least document what can be put inside lazy-load /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: RequestVar copy /clone ?
Ok i think I see the bug. It is the magic which i don't understand
yet that if you change your client_id from val to var it will be auto
promoted into Heap and live out Snippet. Try this out.
Change:
val client_id = clientBox map (_.id.toLong)
To:
var client_id = clientBox map (_.id.toLong)
On Mar 9, 3:34 pm, hexa hex...@gmail.com wrote:
Hi, thanks for the suggestions I like that match {} code.. will try
that..
But what you suggest but the post_id is similar to what I'm doing
now.. since this id is a long it will be copied by value
and I can pass it to multiple requests using a closure...
I'll try to clarify a bit :
A have a ViewClient snippet and an AddInvoice snippet
In the ViewClient I add the action AddInvoice which must be bound to
a client..
Now passing the client to the AddInvoice form is ok .. I can send the
whole client object to the form snippet using a RequestVar..
which I find kinda neet not having to go trough thoses ids... (maybe
i'm wrong thinking that)
But the trick is now that i'm in the AddInvoice snipped and that I
have my RequestVar...
I would like to form a closure on it.. an keep it for the post request
so that it gets to ProcesssEntry and I do just :
inInvoice.client (client)
inInvoice.save
As so no ids are involved...
I would need to make a new RequestVar for the post submit with a copy
of the input RequestVar I got in the AddInvoice from the ViewClient
snippet
But a SessionVar is out it's way overkill and a statefull snippet
might be an idea ... would the RequestVar persist in the statefull
snippet?
Also I'm having trouble understanding how that scoping is done for the
RequestVar if anyone could shed some light on it... like why a closure
won't ref it... (I'm new to scala)
Thanks
hexa
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[Lift] Re: RequestVar copy /clone ?
Hi, thanks for the suggestions I like that match {} code.. will try
that..
But what you suggest but the post_id is similar to what I'm doing
now.. since this id is a long it will be copied by value
and I can pass it to multiple requests using a closure...
I'll try to clarify a bit :
A have a ViewClient snippet and an AddInvoice snippet
In the ViewClient I add the action AddInvoice which must be bound to
a client..
Now passing the client to the AddInvoice form is ok .. I can send the
whole client object to the form snippet using a RequestVar..
which I find kinda neet not having to go trough thoses ids... (maybe
i'm wrong thinking that)
But the trick is now that i'm in the AddInvoice snipped and that I
have my RequestVar...
I would like to form a closure on it.. an keep it for the post request
so that it gets to ProcesssEntry and I do just :
inInvoice.client (client)
inInvoice.save
As so no ids are involved...
I would need to make a new RequestVar for the post submit with a copy
of the input RequestVar I got in the AddInvoice from the ViewClient
snippet
But a SessionVar is out it's way overkill and a statefull snippet
might be an idea ... would the RequestVar persist in the statefull
snippet?
Also I'm having trouble understanding how that scoping is done for the
RequestVar if anyone could shed some light on it... like why a closure
won't ref it... (I'm new to scala)
Thanks
hexa
On Mar 9, 6:21 am, Lukasz Kuczera kuk...@gmail.com wrote:
IMHO you have three options:
1. Use statefull snippet
2. Use SessionVar.
3. User RequestVar.
I went for third option. Because I don't need to retain this value
between multiple requests.
In my code i use something like:
object Index {
object postidVar extends RequestVar(S.param(postid).map(_.toLong)
openOr 0L)
def postid: Long = postidVar.is
}
This gives me global access to RequestVar. Then i use it with
something like:
/**
* Renders post in details.
* @param in
* @return
*/
def show(in: NodeSeq): NodeSeq = {
Post.find(Index.postid) match {
case Full(post) = bind(post,in,
title-post.title,
text - post.text,
date - (new SimpleDateFormat(Const.format)
format
post.date.get))
case Empty = Text(No such post)
case Failure(_,_,_) = S.redirectTo(/failure.html)
}
}
I set it with:
if(User.loggedIn_?) SHtml.link(/edit, ()= Index.postidVar(post.id),
Text(Edit)) else Text()
Or with:
SHtml.link(/details.html,()=Index.postidVar(post.id),Text(Read
more))
And in another snipped I use it like:
def edit(in: NodeSeq): NodeSeq = {
var title =
var text =
var tags =
var post = Post.find(Index.postid)
def submit() = {
if(title==) S.error(Title musn't be empty)
else {
post.open_!.title(title).text(text).save
S.redirectTo(/index)
}
}
post match {
case Full(p) = bind(post,in,
title - SHtml.text(p.title, parm
= title=parm,
(size,55)),
tags - SHtml.text(, parm =
tags=parm),
text - SHtml.textarea(p.text, parm
= text=parm),
submit - SHtml.submit(Save,
submit)
)
case Empty = S.error(Post to edit not found);
S.redirectTo(/
index)
}
You can check the code here:http://github.com/kukems/lift-blog
What i would suggest to change clientBox definition from
object currentClient extends RequestVar [Box [Client]] (Empty)
to:
object currentClient extends
RequestVar(S.param(client_id).map(_.toLong) openOr -1L)
I assume that you don't have anything in database that match Client.id
== -1
Then you can use currentClient as:
Client findByKey currentClient.is map inInvoice.client (_)
On Mar 9, 7:13 am, hexa hex...@gmail.com wrote:
Hi,
I have a RequestVar that I send to a snippet which will then do a
post...
But I would like the RequestVar to persist between the moment it it
received in the post snippet and the post itself...
The only way I found of doing it right now is like :
Source Snippet :
object ViewClient extends ViewClient
class ViewClient
{
object currentClient extends RequestVar [Box [Client]] (Empty)
bind (...
addInvoice - SHtml.link (/invoice/create, () = currentClient
(Full (c)), Text (Ajouter Facture)))
Destination Post Snippet :
def add (inhtml: NodeSeq
Re: [Lift] Re: field without mapper and Form validation
I think you could use plain Record and MetaRecord to do this. -Ross On Mar 9, 2010, at 9:27 AM, Jeppe Nejsum Madsen wrote: On Tue, Mar 9, 2010 at 3:17 PM, Francois fan...@gmail.com wrote: Le 09/03/2010 10:12, Francois a écrit : Hello guys, I'm often using forms without anything to do persistence and RDBMS related, but I would like to be able to use Fields (StringField, EmailField, my owns, etc), validation, error management, etc. without having everything to manage by hand. After searching more carefully on the mailing list archive, it seems that what I'm looking for is something like a mix of one-page wizard with Record/Mapper fields integration (or fields that are currently in Record/Mapper/Wizard may live in there own package and only manage the domain/client part ?) Relevant threads: - http://old.nabble.com/Multipage-wizards-td26504293.html (especially Jeppe answer) - http://old.nabble.com/Lift-Wizard-Fields-incompatible-with-lift-record-fields-tc27230782.html So, I'm going to see how wizards are working, Cool, let me know how it works. As you noted, I basically have the same needs, but haven't started to look into this yet :-) I saw the Lift example now includes a one page form (based on wizards): http://demo.liftweb.net/simple_screen /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: Issue, The URL params can't contains ? ****
Your request needs to be like: http://localhost:8080/download.html?link=http%3A%2F%2Ftest.com%2Ffile.zip%2612345678 and on the server side you can get the link from parameter with S.param(link) On Mar 9, 4:38 pm, Neil.Lv anim...@gmail.com wrote: I want get the these strings (http://test.com/file.zip12345678) from the URL (http://localhost:8080/download.html?link=http://test.com/ file.zip12345678) Thanks very much! Cheers, Neil -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: RequestVar copy /clone ?
I think we still have a miss understanding
The client_id code clientBox map (_.id.toLong) work ok .. no problems
with that
What doesnt work would be doing something like :
val clientBox = ViewClient.currentClient
def processEntry () {
inInvoice.client (clientBox.open_!)
inInvoice.save
S.notice (Entre : Description + inInvoice.description +
Montant : + inInvoice.amount)
}
Since in this case inInvoice.client (clientBox.open_!) return an empty
box since the RequestVar has been destroyed ...
So I was trying to do this but I need to copy or ref the RequestVar so
that I use it in the next request...
At first I tought because of the closure it would ref it... but it
seems not..
It's looking more and more like a statefull snippet is the way to
go...
On Mar 9, 11:10 am, Lukasz Kuczera kuk...@gmail.com wrote:
Ok i think I see the bug. It is the magic which i don't understand
yet that if you change your client_id from val to var it will be auto
promoted into Heap and live out Snippet. Try this out.
Change:
val client_id = clientBox map (_.id.toLong)
To:
var client_id = clientBox map (_.id.toLong)
On Mar 9, 3:34 pm, hexa hex...@gmail.com wrote:
Hi, thanks for the suggestions I like that match {} code.. will try
that..
But what you suggest but the post_id is similar to what I'm doing
now.. since this id is a long it will be copied by value
and I can pass it to multiple requests using a closure...
I'll try to clarify a bit :
A have a ViewClient snippet and an AddInvoice snippet
In the ViewClient I add the action AddInvoice which must be bound to
a client..
Now passing the client to the AddInvoice form is ok .. I can send the
whole client object to the form snippet using a RequestVar..
which I find kinda neet not having to go trough thoses ids... (maybe
i'm wrong thinking that)
But the trick is now that i'm in the AddInvoice snipped and that I
have my RequestVar...
I would like to form a closure on it.. an keep it for the post request
so that it gets to ProcesssEntry and I do just :
inInvoice.client (client)
inInvoice.save
As so no ids are involved...
I would need to make a new RequestVar for the post submit with a copy
of the input RequestVar I got in the AddInvoice from the ViewClient
snippet
But a SessionVar is out it's way overkill and a statefull snippet
might be an idea ... would the RequestVar persist in the statefull
snippet?
Also I'm having trouble understanding how that scoping is done for the
RequestVar if anyone could shed some light on it... like why a closure
won't ref it... (I'm new to scala)
Thanks
hexa
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Re: [Lift] Re: RequestVar copy /clone ?
You can use StatefulSnippets if you like, but what you want to do is perfectly
doable with RequestVars.
Clearly it's not being set in the same request as it's being read.
-
hexahex...@gmail.com wrote:
I think we still have a miss understanding
The client_id code clientBox map (_.id.toLong) work ok .. no problems
with that
What doesnt work would be doing something like :
val clientBox = ViewClient.currentClient
def processEntry () {
inInvoice.client (clientBox.open_!)
inInvoice.save
S.notice (Entre : Description + inInvoice.description +
Montant : + inInvoice.amount)
}
Since in this case inInvoice.client (clientBox.open_!) return an empty
box since the RequestVar has been destroyed ...
So I was trying to do this but I need to copy or ref the RequestVar so
that I use it in the next request...
At first I tought because of the closure it would ref it... but it
seems not..
It's looking more and more like a statefull snippet is the way to
go...
On Mar 9, 11:10 am, Lukasz Kuczera kuk...@gmail.com wrote:
Ok i think I see the bug. It is the magic which i don't understand
yet that if you change your client_id from val to var it will be auto
promoted into Heap and live out Snippet. Try this out.
Change:
val client_id = clientBox map (_.id.toLong)
To:
var client_id = clientBox map (_.id.toLong)
On Mar 9, 3:34 pm, hexa hex...@gmail.com wrote:
Hi, thanks for the suggestions I like that match {} code.. will try
that..
But what you suggest but the post_id is similar to what I'm doing
now.. since this id is a long it will be copied by value
and I can pass it to multiple requests using a closure...
I'll try to clarify a bit :
A have a ViewClient snippet and an AddInvoice snippet
In the ViewClient I add the action AddInvoice which must be bound to
a client..
Now passing the client to the AddInvoice form is ok .. I can send the
whole client object to the form snippet using a RequestVar..
which I find kinda neet not having to go trough thoses ids... (maybe
i'm wrong thinking that)
But the trick is now that i'm in the AddInvoice snipped and that I
have my RequestVar...
I would like to form a closure on it.. an keep it for the post request
so that it gets to ProcesssEntry and I do just :
inInvoice.client (client)
inInvoice.save
As so no ids are involved...
I would need to make a new RequestVar for the post submit with a copy
of the input RequestVar I got in the AddInvoice from the ViewClient
snippet
But a SessionVar is out it's way overkill and a statefull snippet
might be an idea ... would the RequestVar persist in the statefull
snippet?
Also I'm having trouble understanding how that scoping is done for the
RequestVar if anyone could shed some light on it... like why a closure
won't ref it... (I'm new to scala)
Thanks
hexa
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[Lift] NodeSeq to JsExp how to?
I'm trying to produce a web page with editable content. When the user clicks an edit button on a line it uses jQuery to display a modal dialog which allows fields of that line to be edited. I can easily produce a snippet to produce the lines using the backend data and an XHTML template and binding etc. However, I also want the template to include the template for the dialog. So I want the ajax button callback to send JavaScript to instantiate the jQuery UI dialog based on the template and bindings. To build this I need to assemble a JsCmd containing the NodeSeq that comes from the XHTML sequence and the bindings. In short, if this was straight jQuery I would have some JavaScript of the form: $(div title=Dialog TitletheFormNodeSeq/div).dialog() But in my case theFormNodeSeq comes from a NodeSeq that was assembled from part of the XHTML template and the bindings and the end result needs to be a JsCmd. So I'm trying to do something like: JsCmds.Run($( + theFormNodeSeq.toString + ).dialog()) But I need to address escaping issues with the HTML and I also need to pre-process any lift:… / commands in theFormNodeSeq. Any advice (please)? -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: More dynamic Lift
My development cycle has never worked well with JRebel. First, I've got so many machines I do development on (5, 3 of which get wiped each time Ubuntu releases a new version), getting all of those machines set up with JRebel is something of a pain. Further, having JRebel run in some cases is *very bad* (e.g., any compilation takes 10x longer with JRebel). So, when I do use JRebel, it is generally a bad experience for me. This is based on the way I code. First, I use a whole lot of for comprehensions in my code. The problem with for comprehensions is that they create a bunch of anonymous inner classes that are named based on the order they appear in the code. This means that the classes for a given thing change and that leads to incompatible class change issues. Further, I write a lot of code in traits that I mix into lots of different classes. This also leads to less than optimal results in JRebel (more incompatible class change issues.) The JRebel folks and Martin have worked to address the former issue, have not completely eliminated it. There's a further issue... JRebel doesn't work automatically with Lift. Technically, it's costless, but you have to register it with ZeroTurnaround, etc. This means you start using JRebel after you've made a commitment to Lift rather than during the early stages of using Lift. So, based on our recent discussion about onboarding, some discussions Jeppe and I have been having, and my non-JRebel-friendly development style, I thought that there might be a way to address all of these issues at once. On Tue, Mar 9, 2010 at 6:48 AM, Timothy Perrett timo...@getintheloop.euwrote: No it doesn't work for sitemap... as thats loaded at boot only ;-) My point was that it can still be a good experience without JR for our users. Interesting what you were saying about your dev style... i'm usually the other way around and implement sitemap last as I see it as a concrete setting of my content. Cheers, Tim On 9 Mar 2010, at 11:20, Jeppe Nejsum Madsen wrote: On Tue, Mar 9, 2010 at 12:08 PM, Timothy Perrett timo...@getintheloop.eu wrote: BTW, with SBT, don't forget you can do: jetty-run (make changes to your code) prepare-webapp That will redeploy chnaged files / classses to the running jetty instance so development with SBT can still be slick without javarebel :-) But still this doesn't address the problem (I think?) of changing things in Boot. Maybe I code differently from everybody else, but when iterating new features, I always end up making lots of changes to Sitemap. And afaik everyone of those changes requires a restart For the rest I agree JRebel fits quite nicely (it does have it's problems as David points out) /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] NodeSeq to JsExp how to?
Try this (I haven't tested it, so there could be lurking bugs):
case class JQueryNodeSeq(ns: NodeSeq) extends JsExp with JQueryLeft with
HtmlFixer {
override def toJsCmd = jQuery( + JsStr(fixHtml(NodeSeqDialog,
ns)).toJsCmd + )
}
Then JQueryNodeSeq(ns) ~ JsFunc(dialog)
-Ross
On Mar 9, 2010, at 12:06 PM, Stuart Roebuck wrote:
I'm trying to produce a web page with editable content.
When the user clicks an edit button on a line it uses jQuery to
display a modal dialog which allows fields of that line to be edited.
I can easily produce a snippet to produce the lines using the backend
data and an XHTML template and binding etc.
However, I also want the template to include the template for the
dialog. So I want the ajax button callback to send JavaScript to
instantiate the jQuery UI dialog based on the template and bindings.
To build this I need to assemble a JsCmd containing the NodeSeq that
comes from the XHTML sequence and the bindings.
In short, if this was straight jQuery I would have some JavaScript of
the form:
$(div title=Dialog TitletheFormNodeSeq/div).dialog()
But in my case theFormNodeSeq comes from a NodeSeq that was assembled
from part of the XHTML template and the bindings and the end result
needs to be a JsCmd.
So I'm trying to do something like:
JsCmds.Run($( + theFormNodeSeq.toString + ).dialog())
But I need to address escaping issues with the HTML and I also need to
pre-process any lift:… / commands in theFormNodeSeq.
Any advice (please)?
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Re: [Lift] NodeSeq to JsExp how to?
Whoops, I meant Str(fixHtml(...)) not JsStr(fixHtml(...))
-Ross
On Mar 9, 2010, at 12:14 PM, Ross Mellgren wrote:
Try this (I haven't tested it, so there could be lurking bugs):
case class JQueryNodeSeq(ns: NodeSeq) extends JsExp with JQueryLeft with
HtmlFixer {
override def toJsCmd = jQuery( + JsStr(fixHtml(NodeSeqDialog,
ns)).toJsCmd + )
}
Then JQueryNodeSeq(ns) ~ JsFunc(dialog)
-Ross
On Mar 9, 2010, at 12:06 PM, Stuart Roebuck wrote:
I'm trying to produce a web page with editable content.
When the user clicks an edit button on a line it uses jQuery to
display a modal dialog which allows fields of that line to be edited.
I can easily produce a snippet to produce the lines using the backend
data and an XHTML template and binding etc.
However, I also want the template to include the template for the
dialog. So I want the ajax button callback to send JavaScript to
instantiate the jQuery UI dialog based on the template and bindings.
To build this I need to assemble a JsCmd containing the NodeSeq that
comes from the XHTML sequence and the bindings.
In short, if this was straight jQuery I would have some JavaScript of
the form:
$(div title=Dialog TitletheFormNodeSeq/div).dialog()
But in my case theFormNodeSeq comes from a NodeSeq that was assembled
from part of the XHTML template and the bindings and the end result
needs to be a JsCmd.
So I'm trying to do something like:
JsCmds.Run($( + theFormNodeSeq.toString + ).dialog())
But I need to address escaping issues with the HTML and I also need to
pre-process any lift:… / commands in theFormNodeSeq.
Any advice (please)?
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Re: [Lift] Re: More dynamic Lift
Wow, I wish I had 5 machines ;-) lol. Thats an interesting outlook and an explanatory rationale. Can you explain the implementation? Perhaps I can be persuaded. Right now, i'm not convinced about hampering development mode in this way. Cheers, Tim On 9 Mar 2010, at 17:13, David Pollak wrote: So, based on our recent discussion about onboarding, some discussions Jeppe and I have been having, and my non-JRebel-friendly development style, I thought that there might be a way to address all of these issues at once. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] NodeSeq to JsExp how to?
On Tue, Mar 9, 2010 at 9:14 AM, Ross Mellgren dri...@gmail.com wrote:
Try this (I haven't tested it, so there could be lurking bugs):
case class JQueryNodeSeq(ns: NodeSeq) extends JsExp with JQueryLeft with
HtmlFixer {
override def toJsCmd = jQuery( + JsStr(fixHtml(NodeSeqDialog,
ns)).toJsCmd + )
}
Ross,
This is good code, but introduces a potential security vulnerability. ;-)
fixHtml runs the NodeSeq through Lift's snippet handler. If you have
web-user input, a user could type in lift:/ and cause server-side code
to be executed.
import net.liftweb.util._
import Helpers._
Personally, I'd suggest jQuery( + AltXML.toXML(nodeSeq, false, true).encJs
+ )
Thanks,
David
Then JQueryNodeSeq(ns) ~ JsFunc(dialog)
-Ross
On Mar 9, 2010, at 12:06 PM, Stuart Roebuck wrote:
I'm trying to produce a web page with editable content.
When the user clicks an edit button on a line it uses jQuery to
display a modal dialog which allows fields of that line to be edited.
I can easily produce a snippet to produce the lines using the backend
data and an XHTML template and binding etc.
However, I also want the template to include the template for the
dialog. So I want the ajax button callback to send JavaScript to
instantiate the jQuery UI dialog based on the template and bindings.
To build this I need to assemble a JsCmd containing the NodeSeq that
comes from the XHTML sequence and the bindings.
In short, if this was straight jQuery I would have some JavaScript of
the form:
$(div title=Dialog TitletheFormNodeSeq/div).dialog()
But in my case theFormNodeSeq comes from a NodeSeq that was assembled
from part of the XHTML template and the bindings and the end result
needs to be a JsCmd.
So I'm trying to do something like:
JsCmds.Run($( + theFormNodeSeq.toString + ).dialog())
But I need to address escaping issues with the HTML and I also need to
pre-process any lift:… / commands in theFormNodeSeq.
Any advice (please)?
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Re: [Lift] Re: More dynamic Lift
Why is compilation running with JRebel? Also, how critical is JRebel to people getting their feet wet? When I was new to Lift, I used the default setting in the POM that caused a jetty hot redeploy when class files were updated. (Possibly earlier on I restarted jetty manually.) While that meant sitemap would be updated, after a number of restarts it would run out of PermGen memory. I only started using JRebel later. The best of both worlds would be JRebel + manual hot redeploy, which it sounds like is possible with SBT, which Lift plans to switch to. - David Pollakfeeder.of.the.be...@gmail.com wrote: My development cycle has never worked well with JRebel. First, I've got so many machines I do development on (5, 3 of which get wiped each time Ubuntu releases a new version), getting all of those machines set up with JRebel is something of a pain. Further, having JRebel run in some cases is *very bad* (e.g., any compilation takes 10x longer with JRebel). So, when I do use JRebel, it is generally a bad experience for me. This is based on the way I code. First, I use a whole lot of for comprehensions in my code. The problem with for comprehensions is that they create a bunch of anonymous inner classes that are named based on the order they appear in the code. This means that the classes for a given thing change and that leads to incompatible class change issues. Further, I write a lot of code in traits that I mix into lots of different classes. This also leads to less than optimal results in JRebel (more incompatible class change issues.) The JRebel folks and Martin have worked to address the former issue, have not completely eliminated it. There's a further issue... JRebel doesn't work automatically with Lift. Technically, it's costless, but you have to register it with ZeroTurnaround, etc. This means you start using JRebel after you've made a commitment to Lift rather than during the early stages of using Lift. So, based on our recent discussion about onboarding, some discussions Jeppe and I have been having, and my non-JRebel-friendly development style, I thought that there might be a way to address all of these issues at once. On Tue, Mar 9, 2010 at 6:48 AM, Timothy Perrett timo...@getintheloop.euwrote: No it doesn't work for sitemap... as thats loaded at boot only ;-) My point was that it can still be a good experience without JR for our users. Interesting what you were saying about your dev style... i'm usually the other way around and implement sitemap last as I see it as a concrete setting of my content. Cheers, Tim On 9 Mar 2010, at 11:20, Jeppe Nejsum Madsen wrote: On Tue, Mar 9, 2010 at 12:08 PM, Timothy Perrett timo...@getintheloop.eu wrote: BTW, with SBT, don't forget you can do: jetty-run (make changes to your code) prepare-webapp That will redeploy chnaged files / classses to the running jetty instance so development with SBT can still be slick without javarebel :-) But still this doesn't address the problem (I think?) of changing things in Boot. Maybe I code differently from everybody else, but when iterating new features, I always end up making lots of changes to Sitemap. And afaik everyone of those changes requires a restart For the rest I agree JRebel fits quite nicely (it does have it's problems as David points out) /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Converting a null String to an empty String
On 9 March 2010 16:48, David Pollak feeder.of.the.be...@gmail.com wrote: Can you be a little more specific? Sure ;-) I am looking for a method like this: def stringNullTest(s: String): String = if (s != null) s else Of course I could roll my own, but if it is already around (e.g. in StringHelpers) I would use it from there. Heiko Company: weiglewilczek.com Blog: heikoseeberger.name Follow me: twitter.com/hseeberger OSGi on Scala: scalamodules.org Lift, the simply functional web framework: liftweb.net -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: How to use lazy-load?
I opened defect 412 and this is now on the review board: http://reviewboard.liftweb.net/r/263/diff/#index_header On Mar 9, 6:08 pm, Marius marius.dan...@gmail.com wrote: Dear Jeppe, I spent some time today in looking to your issue. I was able to reproduce. The problem was that a NPE was thrown as the S,functionsMap was not initialized as I was doing a light S init to capture original request state. I have a fix for it but I need to do some more testing on it first. I'll open a ticket for this. Br's, Marius On Mar 9, 1:21 pm, Marius marius.dan...@gmail.com wrote: I assume you are using Lift from master ... lazy-load should be able to wrap anything. I'll try to put in some ajaxSelects to see if I can repro. On Mar 8, 10:54 pm, Jeppe Nejsum Madsen je...@ingolfs.dk wrote: On Mon, Mar 8, 2010 at 5:42 PM, Marius marius.dan...@gmail.com wrote: Can you please send me a minimalistic example ? .. The comet actor shutdown looks correct to me as after the lazy content is rendered that comet is not needed anymore. Not easily. When I get some time I'll see if I can reproduce it in a sample. Can you check with firebug if you get any asynchronous javascript back from the comet request? It looks a bit strange. The normal request (with not lazy load) is about 3s. With the lazy load the comet request is almost 60s before anything (not the correct content) is returned (timed out?) Hold on! I did some more digging :-) Since this was just a naive application of lazy-load around an existing snippet, it contained bind with a few ajaxSelects inside. It seems this is what caused the problems. If I remove the ajaxSelects it seems to work. Not sure if this is a supported scenario or not, but if not we should probably emit some notification when running in dev mode.or at least document what can be put inside lazy-load /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] NodeSeq to JsExp how to?
Ah yes, the reason I went through the fixHtml route is because Stuart
specifically mentioned he wanted to process those.
Stuart, you should make sure to properly secure this stuff -- either as an
admin-only thing (understanding that that person has as much rights as you) or
by scrubbing the XML thoroughly.
-Ross
On Mar 9, 2010, at 12:26 PM, David Pollak wrote:
On Tue, Mar 9, 2010 at 9:14 AM, Ross Mellgren dri...@gmail.com wrote:
Try this (I haven't tested it, so there could be lurking bugs):
case class JQueryNodeSeq(ns: NodeSeq) extends JsExp with JQueryLeft with
HtmlFixer {
override def toJsCmd = jQuery( + JsStr(fixHtml(NodeSeqDialog,
ns)).toJsCmd + )
}
Ross,
This is good code, but introduces a potential security vulnerability. ;-)
fixHtml runs the NodeSeq through Lift's snippet handler. If you have
web-user input, a user could type in lift:/ and cause server-side code
to be executed.
import net.liftweb.util._
import Helpers._
Personally, I'd suggest jQuery( + AltXML.toXML(nodeSeq, false, true).encJs
+ )
Thanks,
David
Then JQueryNodeSeq(ns) ~ JsFunc(dialog)
-Ross
On Mar 9, 2010, at 12:06 PM, Stuart Roebuck wrote:
I'm trying to produce a web page with editable content.
When the user clicks an edit button on a line it uses jQuery to
display a modal dialog which allows fields of that line to be edited.
I can easily produce a snippet to produce the lines using the backend
data and an XHTML template and binding etc.
However, I also want the template to include the template for the
dialog. So I want the ajax button callback to send JavaScript to
instantiate the jQuery UI dialog based on the template and bindings.
To build this I need to assemble a JsCmd containing the NodeSeq that
comes from the XHTML sequence and the bindings.
In short, if this was straight jQuery I would have some JavaScript of
the form:
$(div title=Dialog TitletheFormNodeSeq/div).dialog()
But in my case theFormNodeSeq comes from a NodeSeq that was assembled
from part of the XHTML template and the bindings and the end result
needs to be a JsCmd.
So I'm trying to do something like:
JsCmds.Run($( + theFormNodeSeq.toString + ).dialog())
But I need to address escaping issues with the HTML and I also need to
pre-process any lift:… / commands in theFormNodeSeq.
Any advice (please)?
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[Lift] Re: NodeSeq to JsExp how to?
Thanks for that amazingly quick response!
I only wish I understood the proposed solution! :-)
So (confession time) I simplified things a little, the actual
JavaScript is…
var theDialog = $(…).dialog( { autoOpen: true, width: 500, modal:
true, close: function() { theDialog.destroy; }; } )
How do I assemble this, or is there any documentation / examples you
can point me to.
Thanks very much,
Stuart.
On Mar 9, 5:14 pm, Ross Mellgren dri...@gmail.com wrote:
Whoops, I meant Str(fixHtml(...)) not JsStr(fixHtml(...))
-Ross
On Mar 9, 2010, at 12:14 PM, Ross Mellgren wrote:
Try this (I haven't tested it, so there could be lurking bugs):
case class JQueryNodeSeq(ns: NodeSeq) extends JsExp with JQueryLeft with
HtmlFixer {
override def toJsCmd = jQuery( + JsStr(fixHtml(NodeSeqDialog,
ns)).toJsCmd + )
}
Then JQueryNodeSeq(ns) ~ JsFunc(dialog)
-Ross
On Mar 9, 2010, at 12:06 PM, Stuart Roebuck wrote:
I'm trying to produce a web page with editable content.
When the user clicks an edit button on a line it uses jQuery to
display a modal dialog which allows fields of that line to be edited.
I can easily produce a snippet to produce the lines using the backend
data and an XHTML template and binding etc.
However, I also want the template to include the template for the
dialog. So I want the ajax button callback to send JavaScript to
instantiate the jQuery UI dialog based on the template and bindings.
To build this I need to assemble a JsCmd containing the NodeSeq that
comes from the XHTML sequence and the bindings.
In short, if this was straight jQuery I would have some JavaScript of
the form:
$(div title=Dialog TitletheFormNodeSeq/div).dialog()
But in my case theFormNodeSeq comes from a NodeSeq that was assembled
from part of the XHTML template and the bindings and the end result
needs to be a JsCmd.
So I'm trying to do something like:
JsCmds.Run($( + theFormNodeSeq.toString + ).dialog())
But I need to address escaping issues with the HTML and I also need to
pre-process any lift:… / commands in theFormNodeSeq.
Any advice (please)?
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[Lift] Re: NodeSeq to JsExp how to?
Ross,
Thanks - yes, the NodeSeq is all generated from templates internally.
The end user does not have any access to change this stuff so this
particular security issue shouldn't be a problem in this case.
Stuart.
On Mar 9, 5:30 pm, Ross Mellgren dri...@gmail.com wrote:
Ah yes, the reason I went through the fixHtml route is because Stuart
specifically mentioned he wanted to process those.
Stuart, you should make sure to properly secure this stuff -- either as an
admin-only thing (understanding that that person has as much rights as you)
or by scrubbing the XML thoroughly.
-Ross
On Mar 9, 2010, at 12:26 PM, David Pollak wrote:
On Tue, Mar 9, 2010 at 9:14 AM, Ross Mellgren dri...@gmail.com wrote:
Try this (I haven't tested it, so there could be lurking bugs):
case class JQueryNodeSeq(ns: NodeSeq) extends JsExp with JQueryLeft with
HtmlFixer {
override def toJsCmd = jQuery( + JsStr(fixHtml(NodeSeqDialog,
ns)).toJsCmd + )
}
Ross,
This is good code, but introduces a potential security vulnerability. ;-)
fixHtml runs the NodeSeq through Lift's snippet handler. If you have
web-user input, a user could type in lift:/ and cause server-side
code to be executed.
import net.liftweb.util._
import Helpers._
Personally, I'd suggest jQuery( + AltXML.toXML(nodeSeq, false,
true).encJs + )
Thanks,
David
Then JQueryNodeSeq(ns) ~ JsFunc(dialog)
-Ross
On Mar 9, 2010, at 12:06 PM, Stuart Roebuck wrote:
I'm trying to produce a web page with editable content.
When the user clicks an edit button on a line it uses jQuery to
display a modal dialog which allows fields of that line to be edited.
I can easily produce a snippet to produce the lines using the backend
data and an XHTML template and binding etc.
However, I also want the template to include the template for the
dialog. So I want the ajax button callback to send JavaScript to
instantiate the jQuery UI dialog based on the template and bindings.
To build this I need to assemble a JsCmd containing the NodeSeq that
comes from the XHTML sequence and the bindings.
In short, if this was straight jQuery I would have some JavaScript of
the form:
$(div title=Dialog TitletheFormNodeSeq/div).dialog()
But in my case theFormNodeSeq comes from a NodeSeq that was assembled
from part of the XHTML template and the bindings and the end result
needs to be a JsCmd.
So I'm trying to do something like:
JsCmds.Run($( + theFormNodeSeq.toString + ).dialog())
But I need to address escaping issues with the HTML and I also need to
pre-process any lift:… / commands in theFormNodeSeq.
Any advice (please)?
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Follow me:http://twitter.com/dpp
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Re: [Lift] Re: NodeSeq to JsExp how to?
That's why I factored this as a JQueryNodeSeq, so you can pass anything to
dialog (I've used JQuery, and figured you'd need to pass something in there ;-)
JQueryNodeSeq(ns) ~ JsFunc(dialog, JsObj(autoOpen - JsTrue, width -
500, ..., close - AnonFunc(JsVal(this) ~ JsFunc(destroy
case class JQueryNodeSeq(ns: NodeSeq) extends JsExp with JQueryLeft with
HtmlFixer {
JsExp is the basic trait of the JavaScript DSL. Anything that can go into a
JavaScript expression should have this trait.
JQueryLeft is a trait used by the JQuery portion of the JavaScript DSL to
indicate that you can chain JQuery calls onto this.
HtmlFixer is a trait that provides fixHtml
override def toJsCmd = jQuery( + JsStr(fixHtml(NodeSeqDialog,
ns)).toJsCmd + )
fixHtml takes the given NodeSeq and does all the appropriate magics to process
lift: tags and then converts the NodeSeq to valid XHTML.
}
And don't forget the security implications!
Hope that helps,
-Ross
On Mar 9, 2010, at 12:30 PM, Stuart Roebuck wrote:
Thanks for that amazingly quick response!
I only wish I understood the proposed solution! :-)
So (confession time) I simplified things a little, the actual
JavaScript is…
var theDialog = $(…).dialog( { autoOpen: true, width: 500, modal:
true, close: function() { theDialog.destroy; }; } )
How do I assemble this, or is there any documentation / examples you
can point me to.
Thanks very much,
Stuart.
On Mar 9, 5:14 pm, Ross Mellgren dri...@gmail.com wrote:
Whoops, I meant Str(fixHtml(...)) not JsStr(fixHtml(...))
-Ross
On Mar 9, 2010, at 12:14 PM, Ross Mellgren wrote:
Try this (I haven't tested it, so there could be lurking bugs):
case class JQueryNodeSeq(ns: NodeSeq) extends JsExp with JQueryLeft with
HtmlFixer {
override def toJsCmd = jQuery( + JsStr(fixHtml(NodeSeqDialog,
ns)).toJsCmd + )
}
Then JQueryNodeSeq(ns) ~ JsFunc(dialog)
-Ross
On Mar 9, 2010, at 12:06 PM, Stuart Roebuck wrote:
I'm trying to produce a web page with editable content.
When the user clicks an edit button on a line it uses jQuery to
display a modal dialog which allows fields of that line to be edited.
I can easily produce a snippet to produce the lines using the backend
data and an XHTML template and binding etc.
However, I also want the template to include the template for the
dialog. So I want the ajax button callback to send JavaScript to
instantiate the jQuery UI dialog based on the template and bindings.
To build this I need to assemble a JsCmd containing the NodeSeq that
comes from the XHTML sequence and the bindings.
In short, if this was straight jQuery I would have some JavaScript of
the form:
$(div title=Dialog TitletheFormNodeSeq/div).dialog()
But in my case theFormNodeSeq comes from a NodeSeq that was assembled
from part of the XHTML template and the bindings and the end result
needs to be a JsCmd.
So I'm trying to do something like:
JsCmds.Run($( + theFormNodeSeq.toString + ).dialog())
But I need to address escaping issues with the HTML and I also need to
pre-process any lift:… / commands in theFormNodeSeq.
Any advice (please)?
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Re: [Lift] Re: More dynamic Lift
On Tue, Mar 9, 2010 at 9:25 AM, Timothy Perrett timo...@getintheloop.euwrote: Wow, I wish I had 5 machines ;-) lol. Thats an interesting outlook and an explanatory rationale. Can you explain the implementation? Perhaps I can be persuaded. Right now, i'm not convinced about hampering development mode in this way. Basically, Boot will be run and then LiftRules will be snapshot. Then the function in the dynamic block is run. This gives us the baseline LiftRules. For each request, we roll LiftRules back to the snapshot, create a new class loader, reload the function passed to the dynamic block and run that in the scope of the new classloader, then proceed to service the request. This means that all the classes referenced by the request are reloaded (although the excluded classes in model, etc. will be loaded by the servlet scope classloader rather than our per-request classloader). I can structure things such that if you don't use the dynamic block, you will see the same behavior as we have now. I can also structure things that will allow a less dynamic block that allows for SiteMap updates without causing the whole machinery to get invoked. So, what you'd see is: - Existing code would work exactly the way it works now - Any code that used the dynamic block in Boot would cause the new dynamic mechanism to be invoked (this would be the default for new projects, but well commented to suggest alternatives) - There would be a less dynamic mode for SiteMap and other LiftRules changes (this would be run on each request against the snapshotted LiftRules, but there would not be a new classloader). In this mode, you'd only be able to serve 1 request at once. Now, we could wait until 2.8 is the default... with package objects, we could define LiftRules in the package objects to be differently visible to each request (a la RequestVars). Cheers, Tim On 9 Mar 2010, at 17:13, David Pollak wrote: So, based on our recent discussion about onboarding, some discussions Jeppe and I have been having, and my non-JRebel-friendly development style, I thought that there might be a way to address all of these issues at once. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: NodeSeq to JsExp how to?
On Tue, Mar 9, 2010 at 9:34 AM, Stuart Roebuck stuart.roeb...@gmail.comwrote:
Ross,
Thanks - yes, the NodeSeq is all generated from templates internally.
Then Ross's solution is the best for you.
The end user does not have any access to change this stuff so this
particular security issue shouldn't be a problem in this case.
Stuart.
On Mar 9, 5:30 pm, Ross Mellgren dri...@gmail.com wrote:
Ah yes, the reason I went through the fixHtml route is because Stuart
specifically mentioned he wanted to process those.
Stuart, you should make sure to properly secure this stuff -- either as
an admin-only thing (understanding that that person has as much rights as
you) or by scrubbing the XML thoroughly.
-Ross
On Mar 9, 2010, at 12:26 PM, David Pollak wrote:
On Tue, Mar 9, 2010 at 9:14 AM, Ross Mellgren dri...@gmail.com
wrote:
Try this (I haven't tested it, so there could be lurking bugs):
case class JQueryNodeSeq(ns: NodeSeq) extends JsExp with JQueryLeft
with HtmlFixer {
override def toJsCmd = jQuery( + JsStr(fixHtml(NodeSeqDialog,
ns)).toJsCmd + )
}
Ross,
This is good code, but introduces a potential security vulnerability.
;-)
fixHtml runs the NodeSeq through Lift's snippet handler. If you have
web-user input, a user could type in lift:/ and cause server-side code
to be executed.
import net.liftweb.util._
import Helpers._
Personally, I'd suggest jQuery( + AltXML.toXML(nodeSeq, false,
true).encJs + )
Thanks,
David
Then JQueryNodeSeq(ns) ~ JsFunc(dialog)
-Ross
On Mar 9, 2010, at 12:06 PM, Stuart Roebuck wrote:
I'm trying to produce a web page with editable content.
When the user clicks an edit button on a line it uses jQuery to
display a modal dialog which allows fields of that line to be edited.
I can easily produce a snippet to produce the lines using the backend
data and an XHTML template and binding etc.
However, I also want the template to include the template for the
dialog. So I want the ajax button callback to send JavaScript to
instantiate the jQuery UI dialog based on the template and bindings.
To build this I need to assemble a JsCmd containing the NodeSeq that
comes from the XHTML sequence and the bindings.
In short, if this was straight jQuery I would have some JavaScript of
the form:
$(div title=Dialog TitletheFormNodeSeq/div).dialog()
But in my case theFormNodeSeq comes from a NodeSeq that was assembled
from part of the XHTML template and the bindings and the end result
needs to be a JsCmd.
So I'm trying to do something like:
JsCmds.Run($( + theFormNodeSeq.toString + ).dialog())
But I need to address escaping issues with the HTML and I also need
to
pre-process any lift:… / commands in theFormNodeSeq.
Any advice (please)?
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Re: [Lift] Converting a null String to an empty String
On Tue, Mar 9, 2010 at 9:30 AM, Heiko Seeberger heiko.seeber...@googlemail.com wrote: On 9 March 2010 16:48, David Pollak feeder.of.the.be...@gmail.com wrote: Can you be a little more specific? Sure ;-) I am looking for a method like this: def stringNullTest(s: String): String = if (s != null) s else Of course I could roll my own, but if it is already around (e.g. in StringHelpers) I would use it from there. Nothing like that in StringHelpers... feel encouraged to open a ticket and enhance StringHelpers with this method. Heiko Company: weiglewilczek.com Blog: heikoseeberger.name Follow me: twitter.com/hseeberger OSGi on Scala: scalamodules.org Lift, the simply functional web framework: liftweb.net -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Converting a null String to an empty String
how about: def stringTest(x: String): String = Box !! x openOr Cheers, Tim On 9 Mar 2010, at 17:30, Heiko Seeberger wrote: On 9 March 2010 16:48, David Pollak feeder.of.the.be...@gmail.com wrote: Can you be a little more specific? Sure ;-) I am looking for a method like this: def stringNullTest(s: String): String = if (s != null) s else Of course I could roll my own, but if it is already around (e.g. in StringHelpers) I would use it from there. Heiko Company: weiglewilczek.com Blog: heikoseeberger.name Follow me: twitter.com/hseeberger OSGi on Scala: scalamodules.org Lift, the simply functional web framework: liftweb.net -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: RequestVar copy /clone ?
It is not set in the same request as it's being read exactly...
But how is that doable with RequestVars then ?
On Mar 9, 11:55 am, Naftoli Gugenheim naftoli...@gmail.com wrote:
You can use StatefulSnippets if you like, but what you want to do is
perfectly doable with RequestVars.
Clearly it's not being set in the same request as it's being read.
-
hexahex...@gmail.com wrote:
I think we still have a miss understanding
The client_id code clientBox map (_.id.toLong) work ok .. no problems
with that
What doesnt work would be doing something like :
val clientBox = ViewClient.currentClient
def processEntry () {
inInvoice.client (clientBox.open_!)
inInvoice.save
S.notice (Entre : Description + inInvoice.description +
Montant : + inInvoice.amount)
}
Since in this case inInvoice.client (clientBox.open_!) return an empty
box since the RequestVar has been destroyed ...
So I was trying to do this but I need to copy or ref the RequestVar so
that I use it in the next request...
At first I tought because of the closure it would ref it... but it
seems not..
It's looking more and more like a statefull snippet is the way to
go...
On Mar 9, 11:10 am, Lukasz Kuczera kuk...@gmail.com wrote:
Ok i think I see the bug. It is the magic which i don't understand
yet that if you change your client_id from val to var it will be auto
promoted into Heap and live out Snippet. Try this out.
Change:
val client_id = clientBox map (_.id.toLong)
To:
var client_id = clientBox map (_.id.toLong)
On Mar 9, 3:34 pm, hexa hex...@gmail.com wrote:
Hi, thanks for the suggestions I like that match {} code.. will try
that..
But what you suggest but the post_id is similar to what I'm doing
now.. since this id is a long it will be copied by value
and I can pass it to multiple requests using a closure...
I'll try to clarify a bit :
A have a ViewClient snippet and an AddInvoice snippet
In the ViewClient I add the action AddInvoice which must be bound to
a client..
Now passing the client to the AddInvoice form is ok .. I can send the
whole client object to the form snippet using a RequestVar..
which I find kinda neet not having to go trough thoses ids... (maybe
i'm wrong thinking that)
But the trick is now that i'm in the AddInvoice snipped and that I
have my RequestVar...
I would like to form a closure on it.. an keep it for the post request
so that it gets to ProcesssEntry and I do just :
inInvoice.client (client)
inInvoice.save
As so no ids are involved...
I would need to make a new RequestVar for the post submit with a copy
of the input RequestVar I got in the AddInvoice from the ViewClient
snippet
But a SessionVar is out it's way overkill and a statefull snippet
might be an idea ... would the RequestVar persist in the statefull
snippet?
Also I'm having trouble understanding how that scoping is done for the
RequestVar if anyone could shed some light on it... like why a closure
won't ref it... (I'm new to scala)
Thanks
hexa
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[Lift] Re: Converting a null String to an empty String
On Tuesday, March 9, 2010, Timothy Perrett timo...@getintheloop.eu wrote: how about: def stringTest(x: String): String = Box !! x openOr Looks great, especially for a one-handed-writer ;-) Heiko Cheers, Tim On 9 Mar 2010, at 17:30, Heiko Seeberger wrote: On 9 March 2010 16:48, David Pollak feeder.of.the.be...@gmail.com wrote: Can you be a little more specific? Sure ;-)I am looking for a method like this:def stringNullTest(s: String): String = if (s != null) s else Of course I could roll my own, but if it is already around (e.g. in StringHelpers) I would use it from there. Heiko Company: weiglewilczek.com http://weiglewilczek.com/ Blog: heikoseeberger.name http://heikoseeberger.name/ Follow me: twitter.com/hseeberger OSGi on Scala: scalamodules.org http://scalamodules.org/ Lift, the simply functional web framework: liftweb.net http://liftweb.net/ -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Heiko Seeberger Company: weiglewilczek.com Blog: heikoseeberger.name Follow me: twitter.com/hseeberger OSGi on Scala: scalamodules.org Lift, the simply functional web framework: liftweb.net -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: RequestVar copy /clone ?
A RequestVar is a container that transcends Scala's scope rules: multiple
instances of the class holding the RequestVar will see the same value in their
respective RequestVars.
On the other hand its value is per request. That has nothing to do with; two
simultaneous requests can set and get two distinct values without conflict.
Contrast all this with regular scala variables. If a class defines a field, and
spawns a thread that reads it later, clearly it is accessing the same field,
even in Java. Somewhat similarly in Scala a closure (function) *captures* its
references, possibly promoting them from stack to heap. So if a method a
defines a val b and passes a function that references b to some API, b will
outlive a's execution.
So Scala variables are limited by lexical scope but not by request, while
RequestVars are limited by request but not by scope.
Thus, if a function will be executed in the next request, to bridge requests
you have to store the *value* of the RequestVar outside of it (requestVar.is),
then at the beginning of the next request set the RequestVar from that val.
This is a common pattern in Lift: one request specifies a function to be
executed in the beginning of the next request, whether it is triggered by a
link, a form submit, or redirect. This function can bridge the two requests
because it's in the lexical scope of the first request, so to speak, and can
capture its state with the basic rules of scala; but it since it actually
executes in the next request, it can set RequestVars etc. that the next request
will see.
-
hexahex...@gmail.com wrote:
It is not set in the same request as it's being read exactly...
But how is that doable with RequestVars then ?
On Mar 9, 11:55 am, Naftoli Gugenheim naftoli...@gmail.com wrote:
You can use StatefulSnippets if you like, but what you want to do is
perfectly doable with RequestVars.
Clearly it's not being set in the same request as it's being read.
-
hexahex...@gmail.com wrote:
I think we still have a miss understanding
The client_id code clientBox map (_.id.toLong) work ok .. no problems
with that
What doesnt work would be doing something like :
val clientBox = ViewClient.currentClient
def processEntry () {
inInvoice.client (clientBox.open_!)
inInvoice.save
S.notice (Entre : Description + inInvoice.description +
Montant : + inInvoice.amount)
}
Since in this case inInvoice.client (clientBox.open_!) return an empty
box since the RequestVar has been destroyed ...
So I was trying to do this but I need to copy or ref the RequestVar so
that I use it in the next request...
At first I tought because of the closure it would ref it... but it
seems not..
It's looking more and more like a statefull snippet is the way to
go...
On Mar 9, 11:10 am, Lukasz Kuczera kuk...@gmail.com wrote:
Ok i think I see the bug. It is the magic which i don't understand
yet that if you change your client_id from val to var it will be auto
promoted into Heap and live out Snippet. Try this out.
Change:
val client_id = clientBox map (_.id.toLong)
To:
var client_id = clientBox map (_.id.toLong)
On Mar 9, 3:34 pm, hexa hex...@gmail.com wrote:
Hi, thanks for the suggestions I like that match {} code.. will try
that..
But what you suggest but the post_id is similar to what I'm doing
now.. since this id is a long it will be copied by value
and I can pass it to multiple requests using a closure...
I'll try to clarify a bit :
A have a ViewClient snippet and an AddInvoice snippet
In the ViewClient I add the action AddInvoice which must be bound to
a client..
Now passing the client to the AddInvoice form is ok .. I can send the
whole client object to the form snippet using a RequestVar..
which I find kinda neet not having to go trough thoses ids... (maybe
i'm wrong thinking that)
But the trick is now that i'm in the AddInvoice snipped and that I
have my RequestVar...
I would like to form a closure on it.. an keep it for the post request
so that it gets to ProcesssEntry and I do just :
inInvoice.client (client)
inInvoice.save
As so no ids are involved...
I would need to make a new RequestVar for the post submit with a copy
of the input RequestVar I got in the AddInvoice from the ViewClient
snippet
But a SessionVar is out it's way overkill and a statefull snippet
might be an idea ... would the RequestVar persist in the statefull
snippet?
Also I'm having trouble understanding how that scoping is done for the
RequestVar if anyone could shed some light on it... like why a closure
won't ref it... (I'm new to scala)
Thanks
hexa
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Re: [Lift] London Lift talk
On Sat, Feb 20, 2010 at 8:22 PM, andy andy1...@gmail.com wrote: The London Scala User Group (LSUG) will be presenting a talk by Richard Dallaway on 'Getting started with Lift' at SkillsMatter It is done: http://icanhaz.com/gswl ... where you will find a link to the Skillsmatter video. Richard -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: Converting a null String to an empty String
haha!! thanks Heiko... perhaps for my next trick i'll tap out a response using only my nose ;-) Cheers, Tim On 9 Mar 2010, at 18:56, Heiko Seeberger wrote: Looks great, especially for a one-handed-writer ;-) -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: More dynamic Lift
I see almost any difference with JRebel On Mar 9, 6:13 pm, David Pollak feeder.of.the.be...@gmail.com wrote: My development cycle has never worked well with JRebel. First, I've got so many machines I do development on (5, 3 of which get wiped each time Ubuntu releases a new version), getting all of those machines set up with JRebel is something of a pain. Further, having JRebel run in some cases is *very bad* (e.g., any compilation takes 10x longer with JRebel). So, when I do use JRebel, it is generally a bad experience for me. This is based on the way I code. First, I use a whole lot of for comprehensions in my code. The problem with for comprehensions is that they create a bunch of anonymous inner classes that are named based on the order they appear in the code. This means that the classes for a given thing change and that leads to incompatible class change issues. Further, I write a lot of code in traits that I mix into lots of different classes. This also leads to less than optimal results in JRebel (more incompatible class change issues.) The JRebel folks and Martin have worked to address the former issue, have not completely eliminated it. There's a further issue... JRebel doesn't work automatically with Lift. Technically, it's costless, but you have to register it with ZeroTurnaround, etc. This means you start using JRebel after you've made a commitment to Lift rather than during the early stages of using Lift. So, based on our recent discussion about onboarding, some discussions Jeppe and I have been having, and my non-JRebel-friendly development style, I thought that there might be a way to address all of these issues at once. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: London Lift talk
Really nice talk Richard. Great stuff !!! On Mar 9, 9:05 pm, Richard Dallaway dalla...@gmail.com wrote: On Sat, Feb 20, 2010 at 8:22 PM, andy andy1...@gmail.com wrote: The London Scala User Group (LSUG) will be presenting a talk by Richard Dallaway on 'Getting started with Lift' at SkillsMatter It is done:http://icanhaz.com/gswl... where you will find a link to the Skillsmatter video. Richard -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: How to use lazy-load?
Marius marius.dan...@gmail.com writes: I opened defect 412 and this is now on the review board: http://reviewboard.liftweb.net/r/263/diff/#index_header Wow, that was fast :-) Thanks for looking into this! /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] RequestVar copy /clone ?
Howdy,
Lift does rendering most basically with Snippets. Snippets are functions
NodeSeq = NodeSeq... they take a NodeSeq and return a NodeSeq. Snippets
are generally independent entities. They do not know about each other.
They can ask about the state of the session and the state of the request.
We introduced RequestVar (and SessionVar) to give developers a type-safe way
to share information during the scope of a request (RequestVar) and session
(SessionVar).
RequestVars are strongly typed. That means if you define a RequestVar to
hold a String, the compiler will not allow you to put a List into it.
Behind the scenes, RequestVars use a shared Map[String, Any] to store the
information. The String is the name of the RequestVar and the Any is the
thing that you are putting into the slot for the Var.
So, we use a little magic to generate the unique but stable name of the
Var. Specifically, we look at the class name that the compiler selected for
the object that extends RequestVar. If the object is defined within a
class, the class name for the RequestVar will depend on that class name.
When you have an object that extends a class, the Scala compiler may
generate a new class and thus your currentClient RequestVar in the
ViewClient class and the ViewClient object are different RequestVars. They
point to different things.
The easiest way to deal with this is to make your currentClient a top-level
object. If you want to scope the currentClient RequestVar someplace, I'd
suggest:
object ViewClient extends ViewClient {
object currentClient extends RequestVar...
}
So, please try putting the currentClient someplace where there's a single
path (from a class perspective) to it and I'm guessing that your issue will
go away.
Thanks,
David
On Mon, Mar 8, 2010 at 10:13 PM, hexa hex...@gmail.com wrote:
Hi,
I have a RequestVar that I send to a snippet which will then do a
post...
But I would like the RequestVar to persist between the moment it it
received in the post snippet and the post itself...
The only way I found of doing it right now is like :
Source Snippet :
object ViewClient extends ViewClient
class ViewClient
{
object currentClient extends RequestVar [Box [Client]] (Empty)
bind (...
addInvoice - SHtml.link (/invoice/create, () = currentClient
(Full (c)), Text (Ajouter Facture)))
Destination Post Snippet :
def add (inhtml: NodeSeq) : NodeSeq = {
val inInvoice = Invoice.create
val clientBox = ViewClient.currentClient
val client_id = clientBox map (_.id.toLong)
def processEntry () {
Client.findByKey (client_id openOr 0) map (inInvoice.client (_))
inInvoice.save
S.notice (Entre : Description + inInvoice.description +
Montant : + inInvoice.amount)
}
bind (e, inhtml,
description - inInvoice.description.toForm,
amount - inInvoice.amount.toForm,
submit - SHtml.submit (Ajouter Facture, processEntry))
If I try to access the clientBox in processEntry, even with the
closure it should generate.. I get an empty box...
Is there any way to copy / ref or anything or make a new RequestVar
with a copy of the preceding one ?
Would have been nice not to be obligated to do the client_id toLong
code...
And juste do inInvoice.client (client) , inInvoice.save
Thanks a lot
hexa
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Beginning Scala http://www.apress.com/book/view/1430219890
Follow me: http://twitter.com/dpp
Surf the harmonics
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[Lift] Re: RequestVar copy /clone ?
Ha ha! :) Good that's exactly what I needed ...
so I can do something like :
object postedValue extends RequestVar...
val clientBox = ViewClient.currentClient
map clientBox (postedValue (_.is))
And the value will be copied to the new RequestVar for the post
request...
I was missing that is function ...
Thanks a lot exelent explaination! can't wait to try this when I get
home...
On Mar 9, 2:01 pm, Naftoli Gugenheim naftoli...@gmail.com wrote:
A RequestVar is a container that transcends Scala's scope rules: multiple
instances of the class holding the RequestVar will see the same value in
their respective RequestVars.
On the other hand its value is per request. That has nothing to do with; two
simultaneous requests can set and get two distinct values without conflict.
Contrast all this with regular scala variables. If a class defines a field,
and spawns a thread that reads it later, clearly it is accessing the same
field, even in Java. Somewhat similarly in Scala a closure (function)
*captures* its references, possibly promoting them from stack to heap. So if
a method a defines a val b and passes a function that references b to some
API, b will outlive a's execution.
So Scala variables are limited by lexical scope but not by request, while
RequestVars are limited by request but not by scope.
Thus, if a function will be executed in the next request, to bridge requests
you have to store the *value* of the RequestVar outside of it
(requestVar.is), then at the beginning of the next request set the RequestVar
from that val.
This is a common pattern in Lift: one request specifies a function to be
executed in the beginning of the next request, whether it is triggered by a
link, a form submit, or redirect. This function can bridge the two requests
because it's in the lexical scope of the first request, so to speak, and can
capture its state with the basic rules of scala; but it since it actually
executes in the next request, it can set RequestVars etc. that the next
request will see.
-
hexahex...@gmail.com wrote:
It is not set in the same request as it's being read exactly...
But how is that doable with RequestVars then ?
On Mar 9, 11:55 am, Naftoli Gugenheim naftoli...@gmail.com wrote:
You can use StatefulSnippets if you like, but what you want to do is
perfectly doable with RequestVars.
Clearly it's not being set in the same request as it's being read.
-
hexahex...@gmail.com wrote:
I think we still have a miss understanding
The client_id code clientBox map (_.id.toLong) work ok .. no problems
with that
What doesnt work would be doing something like :
val clientBox = ViewClient.currentClient
def processEntry () {
inInvoice.client (clientBox.open_!)
inInvoice.save
S.notice (Entre : Description + inInvoice.description +
Montant : + inInvoice.amount)
}
Since in this case inInvoice.client (clientBox.open_!) return an empty
box since the RequestVar has been destroyed ...
So I was trying to do this but I need to copy or ref the RequestVar so
that I use it in the next request...
At first I tought because of the closure it would ref it... but it
seems not..
It's looking more and more like a statefull snippet is the way to
go...
On Mar 9, 11:10 am, Lukasz Kuczera kuk...@gmail.com wrote:
Ok i think I see the bug. It is the magic which i don't understand
yet that if you change your client_id from val to var it will be auto
promoted into Heap and live out Snippet. Try this out.
Change:
val client_id = clientBox map (_.id.toLong)
To:
var client_id = clientBox map (_.id.toLong)
On Mar 9, 3:34 pm, hexa hex...@gmail.com wrote:
Hi, thanks for the suggestions I like that match {} code.. will try
that..
But what you suggest but the post_id is similar to what I'm doing
now.. since this id is a long it will be copied by value
and I can pass it to multiple requests using a closure...
I'll try to clarify a bit :
A have a ViewClient snippet and an AddInvoice snippet
In the ViewClient I add the action AddInvoice which must be bound to
a client..
Now passing the client to the AddInvoice form is ok .. I can send the
whole client object to the form snippet using a RequestVar..
which I find kinda neet not having to go trough thoses ids... (maybe
i'm wrong thinking that)
But the trick is now that i'm in the AddInvoice snipped and that I
have my RequestVar...
I would like to form a closure on it.. an keep it for the post request
so that it gets to ProcesssEntry and I do just :
inInvoice.client (client)
inInvoice.save
As so no ids are involved...
I would need to make a new RequestVar for the post submit with a copy
of the input RequestVar I got
Re: [Lift] Re: London Lift talk
On Tue, Mar 9, 2010 at 11:45 AM, Marius marius.dan...@gmail.com wrote: Really nice talk Richard. Great stuff !!! It's excellent stuff! On Mar 9, 9:05 pm, Richard Dallaway dalla...@gmail.com wrote: On Sat, Feb 20, 2010 at 8:22 PM, andy andy1...@gmail.com wrote: The London Scala User Group (LSUG) will be presenting a talk by Richard Dallaway on 'Getting started with Lift' at SkillsMatter It is done:http://icanhaz.com/gswl... where you will find a link to the Skillsmatter video. Richard -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: field without mapper and Form validation
On Tue, Mar 9, 2010 at 6:17 AM, Francois fan...@gmail.com wrote:
Le 09/03/2010 10:12, Francois a écrit :
Hello guys,
I'm often using forms without anything to do persistence and RDBMS
related, but I would like to be able to use Fields (StringField,
EmailField, my owns, etc), validation, error management, etc. without
having everything to manage by hand.
After searching more carefully on the mailing list archive, it seems that
what I'm looking for is something like a mix of one-page wizard with
Record/Mapper fields integration (or fields that are currently in
Record/Mapper/Wizard may live in there own package and only manage the
domain/client part ?)
Please look at LiftScreen. Here's the code from example//Wizard.scala:
object PersonScreen extends LiftScreen {
object person extends ScreenVar(Person.create)
override def screenTopTextAsHtml = Full(bA single screen with some input
validation/b)
_register(() = person.is)
val shouldSave = new Field with BooleanField {
def name = Save ?
}
def finish() {
if (shouldSave.is) {
person.is.save
}
}
}
So, you can define your own fields (e.g. val shouldSave extends new Field
with BooleanField) You can also register a FieldContainer (by calling
_register in the constructor). A FieldContainer will return you a list of
BaseField (net.liftweb.util.BaseField). So, Mapper objects implement
FieldContainer. So, you can blend in a Mapper objects as well as anything
else that has collections of BaseField with fields that you define.
You can override doSetup() on the LiftScreen. It will be called when the
Screen is entered. You have to implement the finish() method which will be
called on successful submission of the Screen. Each field has its own
validation rules. If you want to validate across fields, you can overload
the LiftScreen's validate method.
Does this help? One of my open tickets is to provide documentation and
examples of LiftScreen and Wizard (Wizard is a multi-page collection of
Screens). If you can give me a idea of a good example for you, I'll work on
it.
Thanks,
David
Relevant threads:
- http://old.nabble.com/Multipage-wizards-td26504293.html (especially
Jeppe answer)
-
http://old.nabble.com/Lift-Wizard-Fields-incompatible-with-lift-record-fields-tc27230782.html
So, I'm going to see how wizards are working,
Thanks,
--
Francois ARMAND
http://fanf42.blogspot.com
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Re: [Lift] Re: field without mapper and Form validation
Le 09/03/2010 21:27, David Pollak a écrit : [...] Does this help? Yes, clearly, it seems to be what I was looking for. I missed at first in lift example, until Jeppe point it to me. With your explanation, it really looks like it's what I need :) One of my open tickets is to provide documentation and examples of LiftScreen and Wizard (Wizard is a multi-page collection of Screens). If you can give me a idea of a good example for you, I'll work on it. I'm going to think about it, Thanks for you help, -- Francois Armand http://fanf42.blogspot.com -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: NodeSeq to JsExp how to?
Once again, thanks for all of this. I will now go away and
contemplate it all.
On the face of it, as a newby, this JavaScript DSL adds another layer
of complexity to using Lift with JavaScript. Is there an option to
use mostly raw JavaScript? What are the advantages / disadvantages?
Sorry, I thought I'd get my moneys worth from you and then try to put
something onto the wiki.
Best,
Stuart.
On Mar 9, 5:35 pm, Ross Mellgren dri...@gmail.com wrote:
That's why I factored this as a JQueryNodeSeq, so you can pass anything to
dialog (I've used JQuery, and figured you'd need to pass something in there
;-)
JQueryNodeSeq(ns) ~ JsFunc(dialog, JsObj(autoOpen - JsTrue, width -
500, ..., close - AnonFunc(JsVal(this) ~ JsFunc(destroy
case class JQueryNodeSeq(ns: NodeSeq) extends JsExp with JQueryLeft with
HtmlFixer {
JsExp is the basic trait of the JavaScript DSL. Anything that can go into a
JavaScript expression should have this trait.
JQueryLeft is a trait used by the JQuery portion of the JavaScript DSL to
indicate that you can chain JQuery calls onto this.
HtmlFixer is a trait that provides fixHtml
override def toJsCmd = jQuery( + JsStr(fixHtml(NodeSeqDialog,
ns)).toJsCmd + )
fixHtml takes the given NodeSeq and does all the appropriate magics to
process lift: tags and then converts the NodeSeq to valid XHTML.
}
And don't forget the security implications!
Hope that helps,
-Ross
On Mar 9, 2010, at 12:30 PM, Stuart Roebuck wrote:
Thanks for that amazingly quick response!
I only wish I understood the proposed solution! :-)
So (confession time) I simplified things a little, the actual
JavaScript is…
var theDialog = $(…).dialog( { autoOpen: true, width: 500, modal:
true, close: function() { theDialog.destroy; }; } )
How do I assemble this, or is there any documentation / examples you
can point me to.
Thanks very much,
Stuart.
On Mar 9, 5:14 pm, Ross Mellgren dri...@gmail.com wrote:
Whoops, I meant Str(fixHtml(...)) not JsStr(fixHtml(...))
-Ross
On Mar 9, 2010, at 12:14 PM, Ross Mellgren wrote:
Try this (I haven't tested it, so there could be lurking bugs):
case class JQueryNodeSeq(ns: NodeSeq) extends JsExp with JQueryLeft with
HtmlFixer {
override def toJsCmd = jQuery( + JsStr(fixHtml(NodeSeqDialog,
ns)).toJsCmd + )
}
Then JQueryNodeSeq(ns) ~ JsFunc(dialog)
-Ross
On Mar 9, 2010, at 12:06 PM, Stuart Roebuck wrote:
I'm trying to produce a web page with editable content.
When the user clicks an edit button on a line it uses jQuery to
display a modal dialog which allows fields of that line to be edited.
I can easily produce a snippet to produce the lines using the backend
data and an XHTML template and binding etc.
However, I also want the template to include the template for the
dialog. So I want the ajax button callback to send JavaScript to
instantiate the jQuery UI dialog based on the template and bindings.
To build this I need to assemble a JsCmd containing the NodeSeq that
comes from the XHTML sequence and the bindings.
In short, if this was straight jQuery I would have some JavaScript of
the form:
$(div title=Dialog TitletheFormNodeSeq/div).dialog()
But in my case theFormNodeSeq comes from a NodeSeq that was assembled
from part of the XHTML template and the bindings and the end result
needs to be a JsCmd.
So I'm trying to do something like:
JsCmds.Run($( + theFormNodeSeq.toString + ).dialog())
But I need to address escaping issues with the HTML and I also need to
pre-process any lift:… / commands in theFormNodeSeq.
Any advice (please)?
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[Lift] Re: File Download
Any thoughts on this? Still trying to get it to work.
Thanks
On Mar 5, 2:56 pm, DavidV david.v.villa...@gmail.com wrote:
I have recreated a number of StreamingResponse methods from both the
Loop link above and the Lift book and I still can't seem to get the
desired effect. I have been able to get a PlainTextResponse to work
by using LiftRules.dispatch in the Boot, like so:
LiftRules.dispatch.prepend {
case Req((analysis :: inprocess :: Nil), _, _) =
() = Full(PlainTextResponse(test))
}
However, I am unable to get any sort of streaming response to work in
the particular snippet which contains the data I would like to use.
Here are some of the methods I've tried:
def textResponse: Box[LiftResponse] = {
println(TEXT RESPONSE)
val ab = text would go here
Full(PlainTextResponse(ab,
(Content-Type - text/plain) :: Nil, 200
))
}
def streamingResponseFile: Box[LiftResponse] = {
println(STREAMING RESPONSE FILE)
val file: File = new File(
C:\\Source\\trunk\\eclipse\\testLift\\src\\main\\webapp\\images\
\ultra.png
)
val length = file.length
val fileInput = new java.io.FileInputStream(file)
Full(StreamingResponse(fileInput,
() = { fileInput.close },
length,
(Content-Type - image/png) :: Nil,
Nil,
200)
)
}
Do I have to make a LiftRules.dispatch function in the Boot in
addition to the StreamingResponse in my snippet?
I am trying to download plain text, but it is variable and dependent
on some parameters and other variables in the particular Snippet
class. Would I have to pass that data into the boot method in order
to get the desired response? I would prefer to handle it entirely in
the snippet itself.
Finally, I'm not really sure how exactly to handle the
Full(StreamingResponse) once I have created it in order to actually
download the data and save it to the client computer. Although I
assume the browser will handle this one I've formatted the Response
correctly and actually have it working.
Thanks again,
David
On Mar 4, 11:13 am, Marius marius.dan...@gmail.com wrote:
If you want todownloadthrough Lift than yes you can use
StreamingResponse, or simply any other LiftResponse (depending on your
mime-type) and use LiftRules.dispatch mechanism. But you could also
let the container to serve thefile. By default Lift is trying to
serve .html, .xhtml, .htm, .xml etc.. You can write your own rules by
setting
LiftRules.liftRequest = {
case req = true // Pattern match whatever you like and return a
Boolean
}
If Lift cannot find a resource for some reason and you want the
container (or subsequent filters) to handle that you can set
LiftRules.passNotFoundToChain = true
On 4 mar., 17:09, DavidV david.v.villa...@gmail.com wrote:
I am also looking todownloadafilefrom the server that is hosting
my Lift web app. There is a very useful fileUpload method in the
SHtml class and I was wondering if there may be something similar for
afiledownload? I was unable to find anything, and searching for
Lift or Scala Liftdownload on Google returns nothing but pages to
downloadthe libraries, plugins or source code. I suppose I could use
the StreamingResponse, but I am already saving thefileI need to the
server and it would be nice to be able todownloadit to any client
computer with the typical Browse button, similar to the upload,
Thanks,
David
On Feb 14, 3:58 pm, Gang wangga...@gmail.com wrote:
Thanks Tim, that's exactly what I'm looking for!
On Feb 14, 11:27 am, Timothy Perrett timo...@getintheloop.eu wrote:
See:
http://blog.getintheloop.eu/2009/3/19/understanding-lift-s-streamingr...
Construct the CSV in memory and just then stuff it into a streaming
response as a byte array.
Cheers, Tim
On 14 Feb 2010, at 16:18, Gang wrote:
Hi,
I have a question and it may not be a pure Lift one. But since I'm
working on a Lift app and this group is the most responsive one I
have
seen, might just try it here.
I need todownloaddata from database in CSV format. What is the best
approach within Lift framework? Do I have to write the data on the
server somewhere and then provide user with a link? I have tried to
google scala, lift,filedownload..., but could not come up with
what I'm looking for. Maybe I didn't use the right key words in
search? Thanks in advance!
Brs
Gang
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- Show quoted text
Re: [Lift] Re: File Download
Is your dispatch defined it boot? It doesnt sound like it is...
Cheers, tim
On 9 Mar 2010, at 21:45, DavidV wrote:
Any thoughts on this? Still trying to get it to work.
Thanks
On Mar 5, 2:56 pm, DavidV david.v.villa...@gmail.com wrote:
I have recreated a number of StreamingResponse methods from both the
Loop link above and the Lift book and I still can't seem to get the
desired effect. I have been able to get a PlainTextResponse to work
by using LiftRules.dispatch in the Boot, like so:
LiftRules.dispatch.prepend {
case Req((analysis :: inprocess :: Nil), _, _) =
() = Full(PlainTextResponse(test))
}
However, I am unable to get any sort of streaming response to work in
the particular snippet which contains the data I would like to use.
Here are some of the methods I've tried:
def textResponse: Box[LiftResponse] = {
println(TEXT RESPONSE)
val ab = text would go here
Full(PlainTextResponse(ab,
(Content-Type - text/plain) :: Nil, 200
))
}
def streamingResponseFile: Box[LiftResponse] = {
println(STREAMING RESPONSE FILE)
val file: File = new File(
C:\\Source\\trunk\\eclipse\\testLift\\src\\main\\webapp\\images\
\ultra.png
)
val length = file.length
val fileInput = new java.io.FileInputStream(file)
Full(StreamingResponse(fileInput,
() = { fileInput.close },
length,
(Content-Type - image/png) :: Nil,
Nil,
200)
)
}
Do I have to make a LiftRules.dispatch function in the Boot in
addition to the StreamingResponse in my snippet?
I am trying to download plain text, but it is variable and dependent
on some parameters and other variables in the particular Snippet
class. Would I have to pass that data into the boot method in order
to get the desired response? I would prefer to handle it entirely in
the snippet itself.
Finally, I'm not really sure how exactly to handle the
Full(StreamingResponse) once I have created it in order to actually
download the data and save it to the client computer. Although I
assume the browser will handle this one I've formatted the Response
correctly and actually have it working.
Thanks again,
David
On Mar 4, 11:13 am, Marius marius.dan...@gmail.com wrote:
If you want todownloadthrough Lift than yes you can use
StreamingResponse, or simply any other LiftResponse (depending on your
mime-type) and use LiftRules.dispatch mechanism. But you could also
let the container to serve thefile. By default Lift is trying to
serve .html, .xhtml, .htm, .xml etc.. You can write your own rules by
setting
LiftRules.liftRequest = {
case req = true // Pattern match whatever you like and return a
Boolean
}
If Lift cannot find a resource for some reason and you want the
container (or subsequent filters) to handle that you can set
LiftRules.passNotFoundToChain = true
On 4 mar., 17:09, DavidV david.v.villa...@gmail.com wrote:
I am also looking todownloadafilefrom the server that is hosting
my Lift web app. There is a very useful fileUpload method in the
SHtml class and I was wondering if there may be something similar for
afiledownload? I was unable to find anything, and searching for
Lift or Scala Liftdownload on Google returns nothing but pages to
downloadthe libraries, plugins or source code. I suppose I could use
the StreamingResponse, but I am already saving thefileI need to the
server and it would be nice to be able todownloadit to any client
computer with the typical Browse button, similar to the upload,
Thanks,
David
On Feb 14, 3:58 pm, Gang wangga...@gmail.com wrote:
Thanks Tim, that's exactly what I'm looking for!
On Feb 14, 11:27 am, Timothy Perrett timo...@getintheloop.eu wrote:
See:
http://blog.getintheloop.eu/2009/3/19/understanding-lift-s-streamingr...
Construct the CSV in memory and just then stuff it into a streaming
response as a byte array.
Cheers, Tim
On 14 Feb 2010, at 16:18, Gang wrote:
Hi,
I have a question and it may not be a pure Lift one. But since I'm
working on a Lift app and this group is the most responsive one I have
seen, might just try it here.
I need todownloaddata from database in CSV format. What is the best
approach within Lift framework? Do I have to write the data on the
server somewhere and then provide user with a link? I have tried to
google scala, lift,filedownload..., but could not come up with
what I'm looking for. Maybe I didn't use the right key words in
search? Thanks in advance!
Brs
Gang
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Re: [Lift] Re: More dynamic Lift
Le 09/03/2010 18:35, David Pollak a écrit : On Tue, Mar 9, 2010 at 9:25 AM, Timothy Perrett timo...@getintheloop.eu mailto:timo...@getintheloop.eu wrote: Wow, I wish I had 5 machines ;-) lol. Thats an interesting outlook and an explanatory rationale. Can you explain the implementation? Perhaps I can be persuaded. Right now, i'm not convinced about hampering development mode in this way. Basically, Boot will be run and then LiftRules will be snapshot. Then the function in the dynamic block is run. This gives us the baseline LiftRules. Tapestry 5 has such a functionnality build-in (JRebel wasn't around at the time when T5 was built, so there was no alternatives - and JRebel is not free for Java application) The user view is here: http://tapestry.apache.org/tapestry5.1/guide/reload.html I think that the implementation is somewhat like what you described (a classloader that can be dismissed used for class that could be reload) with some more logic to handle when reloads happen I'm not sure into what extends the comparison may be followed (T5 internal is quite different than Lift, there is pools of already instantiated component/pages waiting to be assembled for a request. See[0] for the component instantiation logic) Basically, there is a resquest filter[1] that look for time elapsed since last reload, and a update listener hub[2] is said to say to each of its registered resources to check for update[3]. Resources know how to check for update depending of their type (template resource, class[5], etc). If it is inspiring... The corresponding code is here, for last release: [0] http://svn.apache.org/viewvc/tapestry/tapestry5/tags/releases/5.1.0.7/tapestry-core/src/main/java/org/apache/tapestry5/internal/services/ComponentInstantiatorSourceImpl.java?view=markup [1] Tapestry request filter: http://svn.apache.org/viewvc/tapestry/tapestry5/tags/releases/5.1.0.7/tapestry-core/src/main/java/org/apache/tapestry5/internal/services/CheckForUpdatesFilter.java?view=markup [2] Update Listener Hub: http://svn.apache.org/viewvc/tapestry/tapestry5/tags/releases/5.1.0.7/tapestry-core/src/main/java/org/apache/tapestry5/internal/services/UpdateListenerHubImpl.java?view=markup [4] Update listener: http://svn.apache.org/viewvc/tapestry/tapestry5/tags/releases/5.1.0.7/tapestry-core/src/main/java/org/apache/tapestry5/services/UpdateListener.java?view=markup [5] Page (checkForUpdate): http://svn.apache.org/viewvc/tapestry/tapestry5/tags/releases/5.1.0.7/tapestry-core/src/main/java/org/apache/tapestry5/internal/services/PagePoolImpl.java?view=markup -- Francois ARMAND http://fanf42.blogspot.com -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: File Download
On Tue, Mar 9, 2010 at 1:45 PM, DavidV david.v.villa...@gmail.com wrote:
Any thoughts on this? Still trying to get it to work.
See the enclosed example code. Specifically, there's a dpp.gif file in
src/main/resources and in Boot.scala:
LiftRules.statelessDispatchTable.append {
case Req(image :: name :: Nil, gif, GetRequest) =
() =
for {
stream - tryo(this.getClass.getResourceAsStream(/+name+.gif))
if null ne stream
} yield StreamingResponse(stream, () = stream.close,
stream.available, List(Content-Type - image/gif), Nil, 200)
}
If you put other GIF files in resources, the server will find and serve
them.
Thanks
On Mar 5, 2:56 pm, DavidV david.v.villa...@gmail.com wrote:
I have recreated a number of StreamingResponse methods from both the
Loop link above and the Lift book and I still can't seem to get the
desired effect. I have been able to get a PlainTextResponse to work
by using LiftRules.dispatch in the Boot, like so:
LiftRules.dispatch.prepend {
case Req((analysis :: inprocess :: Nil), _, _) =
() = Full(PlainTextResponse(test))
}
However, I am unable to get any sort of streaming response to work in
the particular snippet which contains the data I would like to use.
Here are some of the methods I've tried:
def textResponse: Box[LiftResponse] = {
println(TEXT RESPONSE)
val ab = text would go here
Full(PlainTextResponse(ab,
(Content-Type - text/plain) :: Nil, 200
))
}
def streamingResponseFile: Box[LiftResponse] = {
println(STREAMING RESPONSE FILE)
val file: File = new File(
C:\\Source\\trunk\\eclipse\\testLift\\src\\main\\webapp\\images\
\ultra.png
)
val length = file.length
val fileInput = new java.io.FileInputStream(file)
Full(StreamingResponse(fileInput,
() = { fileInput.close },
length,
(Content-Type - image/png) :: Nil,
Nil,
200)
)
}
Do I have to make a LiftRules.dispatch function in the Boot in
addition to the StreamingResponse in my snippet?
I am trying to download plain text, but it is variable and dependent
on some parameters and other variables in the particular Snippet
class. Would I have to pass that data into the boot method in order
to get the desired response? I would prefer to handle it entirely in
the snippet itself.
Finally, I'm not really sure how exactly to handle the
Full(StreamingResponse) once I have created it in order to actually
download the data and save it to the client computer. Although I
assume the browser will handle this one I've formatted the Response
correctly and actually have it working.
Thanks again,
David
On Mar 4, 11:13 am, Marius marius.dan...@gmail.com wrote:
If you want todownloadthrough Lift than yes you can use
StreamingResponse, or simply any other LiftResponse (depending on your
mime-type) and use LiftRules.dispatch mechanism. But you could also
let the container to serve thefile. By default Lift is trying to
serve .html, .xhtml, .htm, .xml etc.. You can write your own rules by
setting
LiftRules.liftRequest = {
case req = true // Pattern match whatever you like and return a
Boolean
}
If Lift cannot find a resource for some reason and you want the
container (or subsequent filters) to handle that you can set
LiftRules.passNotFoundToChain = true
On 4 mar., 17:09, DavidV david.v.villa...@gmail.com wrote:
I am also looking todownloadafilefrom the server that is hosting
my Lift web app. There is a very useful fileUpload method in the
SHtml class and I was wondering if there may be something similar for
afiledownload? I was unable to find anything, and searching for
Lift or Scala Liftdownload on Google returns nothing but pages to
downloadthe libraries, plugins or source code. I suppose I could use
the StreamingResponse, but I am already saving thefileI need to the
server and it would be nice to be able todownloadit to any client
computer with the typical Browse button, similar to the upload,
Thanks,
David
On Feb 14, 3:58 pm, Gang wangga...@gmail.com wrote:
Thanks Tim, that's exactly what I'm looking for!
On Feb 14, 11:27 am, Timothy Perrett timo...@getintheloop.eu
wrote:
See:
http://blog.getintheloop.eu/2009/3/19/understanding-lift-s-streamingr...
Construct the CSV in memory and just then stuff it into a
streaming response as a byte array.
Cheers, Tim
On 14 Feb 2010, at 16:18, Gang wrote:
Hi,
I have a question and it may not be a pure Lift one. But since
I'm
working on a Lift app and this group is the most responsive one
I have
seen, might just try it here.
I need todownloaddata from database in CSV format. What is the
best
approach within Lift framework
[Lift] Re: NodeSeq to JsExp how to?
Thanks Ross and David… the code seems to be working great now.
Stuart.
On Mar 9, 10:16 pm, David Pollak feeder.of.the.be...@gmail.com
wrote:
On Tue, Mar 9, 2010 at 1:11 PM, Stuart Roebuck
stuart.roeb...@gmail.comwrote:
Once again, thanks for all of this. I will now go away and
contemplate it all.
On the face of it, as a newby, this JavaScript DSL adds another layer
of complexity to using Lift with JavaScript. Is there an option to
use mostly raw JavaScript? What are the advantages / disadvantages?
JsRaw(my JavaScript Here)
The disadvantage is type-safety/having the compiler help you.
I wrote most of the JavaScript helpers (or at least wrote the core stuff and
other followed my pattern.) A few months back, there was a discussion about
changing that stuff around. I'd like to see Lift's JavaScript helper be a
lot more composable than they are now... like the Lift-json stuff and also
integrate better with Lift-json. But I don't see that happening with Lift
2.0 unless there's a huge block of time/effort that someone wants to throw
at the issue.
Sorry, I thought I'd get my moneys worth from you and then try to put
something onto the wiki.
Best,
Stuart.
On Mar 9, 5:35 pm, Ross Mellgren dri...@gmail.com wrote:
That's why I factored this as a JQueryNodeSeq, so you can pass anything
to dialog (I've used JQuery, and figured you'd need to pass something in
there ;-)
JQueryNodeSeq(ns) ~ JsFunc(dialog, JsObj(autoOpen - JsTrue, width
- 500, ..., close - AnonFunc(JsVal(this) ~ JsFunc(destroy
case class JQueryNodeSeq(ns: NodeSeq) extends JsExp with JQueryLeft
with HtmlFixer {
JsExp is the basic trait of the JavaScript DSL. Anything that can go into
a JavaScript expression should have this trait.
JQueryLeft is a trait used by the JQuery portion of the JavaScript DSL to
indicate that you can chain JQuery calls onto this.
HtmlFixer is a trait that provides fixHtml
override def toJsCmd = jQuery( + JsStr(fixHtml(NodeSeqDialog,
ns)).toJsCmd + )
fixHtml takes the given NodeSeq and does all the appropriate magics to
process lift: tags and then converts the NodeSeq to valid XHTML.
}
And don't forget the security implications!
Hope that helps,
-Ross
On Mar 9, 2010, at 12:30 PM, Stuart Roebuck wrote:
Thanks for that amazingly quick response!
I only wish I understood the proposed solution! :-)
So (confession time) I simplified things a little, the actual
JavaScript is…
var theDialog = $(…).dialog( { autoOpen: true, width: 500, modal:
true, close: function() { theDialog.destroy; }; } )
How do I assemble this, or is there any documentation / examples you
can point me to.
Thanks very much,
Stuart.
On Mar 9, 5:14 pm, Ross Mellgren dri...@gmail.com wrote:
Whoops, I meant Str(fixHtml(...)) not JsStr(fixHtml(...))
-Ross
On Mar 9, 2010, at 12:14 PM, Ross Mellgren wrote:
Try this (I haven't tested it, so there could be lurking bugs):
case class JQueryNodeSeq(ns: NodeSeq) extends JsExp with JQueryLeft
with HtmlFixer {
override def toJsCmd = jQuery( + JsStr(fixHtml(NodeSeqDialog,
ns)).toJsCmd + )
}
Then JQueryNodeSeq(ns) ~ JsFunc(dialog)
-Ross
On Mar 9, 2010, at 12:06 PM, Stuart Roebuck wrote:
I'm trying to produce a web page with editable content.
When the user clicks an edit button on a line it uses jQuery to
display a modal dialog which allows fields of that line to be
edited.
I can easily produce a snippet to produce the lines using the
backend
data and an XHTML template and binding etc.
However, I also want the template to include the template for the
dialog. So I want the ajax button callback to send JavaScript to
instantiate the jQuery UI dialog based on the template and bindings.
To build this I need to assemble a JsCmd containing the NodeSeq that
comes from the XHTML sequence and the bindings.
In short, if this was straight jQuery I would have some JavaScript
of
the form:
$(div title=Dialog TitletheFormNodeSeq/div).dialog()
But in my case theFormNodeSeq comes from a NodeSeq that was
assembled
from part of the XHTML template and the bindings and the end result
needs to be a JsCmd.
So I'm trying to do something like:
JsCmds.Run($( + theFormNodeSeq.toString + ).dialog())
But I need to address escaping issues with the HTML and I also need
to
pre-process any lift:… / commands in theFormNodeSeq.
Any advice (please)?
--
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[Lift] Re: RequestVar copy /clone ?
Unfortunately this did not solve my problem :
Let me paste the complete code :
Client View :
object ViewClient extends ViewClient
{
object currentClient extends RequestVar [Box [Client]] (Empty)
}
class ViewClient
{
val clientId = S.param (id) openOr
val client = try {
Client.findByKey (clientId.toLong)
}
catch {
case e:NumberFormatException = Empty
}
def view (inhtml: NodeSeq) : NodeSeq = {
client map ( { c =
bind (client, inhtml,
firstName - c.firstName.asHtml,
lastName - c.lastName.asHtml,
addInvoice - SHtml.link (/invoice/create, () =
ViewClient.currentClient (Full (c)), Text (Ajouter Facture)))
} ) openOr Text (Client invalide)
}
}
AddInvoice View : (linked to /invoice/create)
class AddInvoice {
def add (inhtml: NodeSeq) : NodeSeq = {
val inInvoice = Invoice.create
val clientBox = ViewClient.currentClient
val client = ViewClient.currentClient.open_!
def processEntry () {
S.notice (Test + client.firstName)
clientBox map (inInvoice.client (_))
inInvoice.save
S.notice (Entre : Description + inInvoice.description +
Montant : + inInvoice.amount)
}
bind (e, inhtml,
description - inInvoice.description.toForm,
amount - inInvoice.amount.toForm,
submit - SHtml.submit (Ajouter Facture, processEntry))
}
}
This yeilds an empty box exception...
The method suggested by Naftoli Gugenheim does the same .. it seems
the is does not copy the value either...
So in both cases whatever was in my RequestVar is gone on the second
request...
Any ideas ?
Thanks!
hexa
On Mar 9, 3:09 pm, David Pollak feeder.of.the.be...@gmail.com wrote:
Howdy,
Lift does rendering most basically with Snippets. Snippets are functions
NodeSeq = NodeSeq... they take a NodeSeq and return a NodeSeq. Snippets
are generally independent entities. They do not know about each other.
They can ask about the state of the session and the state of the request.
We introduced RequestVar (and SessionVar) to give developers a type-safe way
to share information during the scope of a request (RequestVar) and session
(SessionVar).
RequestVars are strongly typed. That means if you define a RequestVar to
hold a String, the compiler will not allow you to put a List into it.
Behind the scenes, RequestVars use a shared Map[String, Any] to store the
information. The String is the name of the RequestVar and the Any is the
thing that you are putting into the slot for the Var.
So, we use a little magic to generate the unique but stable name of the
Var. Specifically, we look at the class name that the compiler selected for
the object that extends RequestVar. If the object is defined within a
class, the class name for the RequestVar will depend on that class name.
When you have an object that extends a class, the Scala compiler may
generate a new class and thus your currentClient RequestVar in the
ViewClient class and the ViewClient object are different RequestVars. They
point to different things.
The easiest way to deal with this is to make your currentClient a top-level
object. If you want to scope the currentClient RequestVar someplace, I'd
suggest:
object ViewClient extends ViewClient {
object currentClient extends RequestVar...
}
So, please try putting the currentClient someplace where there's a single
path (from a class perspective) to it and I'm guessing that your issue will
go away.
Thanks,
David
On Mon, Mar 8, 2010 at 10:13 PM, hexa hex...@gmail.com wrote:
Hi,
I have a RequestVar that I send to a snippet which will then do a
post...
But I would like the RequestVar to persist between the moment it it
received in the post snippet and the post itself...
The only way I found of doing it right now is like :
Source Snippet :
object ViewClient extends ViewClient
class ViewClient
{
object currentClient extends RequestVar [Box [Client]] (Empty)
bind (...
addInvoice - SHtml.link (/invoice/create, () = currentClient
(Full (c)), Text (Ajouter Facture)))
Destination Post Snippet :
def add (inhtml: NodeSeq) : NodeSeq = {
val inInvoice = Invoice.create
val clientBox = ViewClient.currentClient
val client_id = clientBox map (_.id.toLong)
def processEntry () {
Client.findByKey (client_id openOr 0) map (inInvoice.client (_))
inInvoice.save
S.notice (Entre : Description + inInvoice.description +
Montant : + inInvoice.amount)
}
bind (e, inhtml,
description - inInvoice.description.toForm,
amount - inInvoice.amount.toForm,
submit - SHtml.submit (Ajouter Facture, processEntry))
If I try to access the clientBox in processEntry, even with the
closure it should generate.. I get an empty box...
Is there any way to copy / ref or anything or make a new RequestVar
with a copy of the preceding one ?
Would
[Lift] Re: RequestVar copy /clone ?
Oops in the previous code it's actually :
class AddInvoice {
val clientBox = ViewClient.currentClient
val client = ViewClient.currentClient.open_!
def add (inhtml: NodeSeq) : NodeSeq = {
val inInvoice = Invoice.create
def processEntry () {
S.notice (Test + client.firstName)
inInvoice.client (client)
inInvoice.save
S.notice (Entre : Description + inInvoice.description +
Montant : + inInvoice.amount)
}
bind (e, inhtml,
description - inInvoice.description.toForm,
amount - inInvoice.amount.toForm,
submit - SHtml.submit (Ajouter Facture, processEntry))
}
}
The client* are in the class not the method... works great with a
statful snippet tought
On Mar 9, 7:04 pm, hexa hex...@gmail.com wrote:
Unfortunately this did not solve my problem :
Let me paste the complete code :
Client View :
object ViewClient extends ViewClient
{
object currentClient extends RequestVar [Box [Client]] (Empty)
}
class ViewClient
{
val clientId = S.param (id) openOr
val client = try {
Client.findByKey (clientId.toLong)
}
catch {
case e:NumberFormatException = Empty
}
def view (inhtml: NodeSeq) : NodeSeq = {
client map ( { c =
bind (client, inhtml,
firstName - c.firstName.asHtml,
lastName - c.lastName.asHtml,
addInvoice - SHtml.link (/invoice/create, () =
ViewClient.currentClient (Full (c)), Text (Ajouter Facture)))
} ) openOr Text (Client invalide)
}
}
AddInvoice View : (linked to /invoice/create)
class AddInvoice {
def add (inhtml: NodeSeq) : NodeSeq = {
val inInvoice = Invoice.create
val clientBox = ViewClient.currentClient
val client = ViewClient.currentClient.open_!
def processEntry () {
S.notice (Test + client.firstName)
clientBox map (inInvoice.client (_))
inInvoice.save
S.notice (Entre : Description + inInvoice.description +
Montant : + inInvoice.amount)
}
bind (e, inhtml,
description - inInvoice.description.toForm,
amount - inInvoice.amount.toForm,
submit - SHtml.submit (Ajouter Facture, processEntry))
}
}
This yeilds an empty box exception...
The method suggested by Naftoli Gugenheim does the same .. it seems
the is does not copy the value either...
So in both cases whatever was in my RequestVar is gone on the second
request...
Any ideas ?
Thanks!
hexa
On Mar 9, 3:09 pm, David Pollak feeder.of.the.be...@gmail.com wrote:
Howdy,
Lift does rendering most basically with Snippets. Snippets are functions
NodeSeq = NodeSeq... they take a NodeSeq and return a NodeSeq. Snippets
are generally independent entities. They do not know about each other.
They can ask about the state of the session and the state of the request.
We introduced RequestVar (and SessionVar) to give developers a type-safe way
to share information during the scope of a request (RequestVar) and session
(SessionVar).
RequestVars are strongly typed. That means if you define a RequestVar to
hold a String, the compiler will not allow you to put a List into it.
Behind the scenes, RequestVars use a shared Map[String, Any] to store the
information. The String is the name of the RequestVar and the Any is the
thing that you are putting into the slot for the Var.
So, we use a little magic to generate the unique but stable name of the
Var. Specifically, we look at the class name that the compiler selected for
the object that extends RequestVar. If the object is defined within a
class, the class name for the RequestVar will depend on that class name.
When you have an object that extends a class, the Scala compiler may
generate a new class and thus your currentClient RequestVar in the
ViewClient class and the ViewClient object are different RequestVars. They
point to different things.
The easiest way to deal with this is to make your currentClient a top-level
object. If you want to scope the currentClient RequestVar someplace, I'd
suggest:
object ViewClient extends ViewClient {
object currentClient extends RequestVar...
}
So, please try putting the currentClient someplace where there's a single
path (from a class perspective) to it and I'm guessing that your issue will
go away.
Thanks,
David
On Mon, Mar 8, 2010 at 10:13 PM, hexa hex...@gmail.com wrote:
Hi,
I have a RequestVar that I send to a snippet which will then do a
post...
But I would like the RequestVar to persist between the moment it it
received in the post snippet and the post itself...
The only way I found of doing it right now is like :
Source Snippet :
object ViewClient extends ViewClient
class ViewClient
{
object currentClient extends RequestVar [Box [Client]] (Empty)
bind (...
addInvoice - SHtml.link (/invoice/create, () = currentClient
(Full
[Lift] Serious widget action
It is time for me to add some serious widgets to my lift app. So far, I am most enamored by ExtJS. Another alternative could possibly be ZK. Does anybody have any experience with these frameworks? Can you comment on why integrating them with Scala/Lift would be a bad idea (or not work)? I searched for some historical posts on ExtJS and discovered some threads about it's license and how it impacts inclusion in the lift framework. Would a commercial license prohibit it from being a lift- widget submodule candidate? Does anybody have a better suggestion that you think can compete with ExtJS? -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
