[Lift] Re: Mapper - JObject bridge
Hi,
Yes, that's a way to convert JSON AST to string and vice versa. All
functions in lift-json operate on AST instances. This is lets us post-
and pre-process JSON in many ways before converting it to string. See
for instance functions map, merge, diff, \, etc. defined in JsonAST
(scaladocs still missing but will be provided before Lift 2.0 is
released). Typical conversions might for instance remove some data
from JSON, convert data types, change structure of resulting JSON and
so on.
I usually import all needed objects and their members. After that the
code becomes a bit more concise (the cast is unfortunately needed
since JSON comes from the wild and can be anything):
def encodeAsJsonString(in: A) = compact(render(encodeAsJson(in)))
def buildFromJsonString(json: String): A = buildFromJson(parse
(json).asInstanceOf[JObject])
Cheers Joni
On 16 joulu, 09:03, Xuefeng Wu ben...@gmail.com wrote:
Hi,
I add two method to en/decode JObject/String
def encodeAsJsonString(in: A): String =
Printer.compact(JsonAST.render(encodeAsJson(in)))
def buildFromJsonString(json: String): A =
buildFromJson(JsonParser.parse(json).asInstanceOf[JsonAST.JObject])
Do there have better way?
On Thu, Dec 3, 2009 at 5:15 AM, David Pollak
feeder.of.the.be...@gmail.comwrote:
Folks (HarryH -- this means you),
I've just checked in code on the dpp_issue_213 that does Mapper - JObject
bridging using the awesome lift-json library.
The methods on MetaMapper:
protected def encodeAsJSON_! (toEncode: A): JsonAST.JObject
protected def decodeFromJSON_!(json: JsonAST.JObject): A
Implement the bridge. They are protected and have a _! in their name
because they are *dangerous* in that data can be exposed on the JSON object
that you might not want exposed and these methods should be used with
extreme caution.
An example of usage can be found in the MapperSpecs:
object SampleModel extends SampleModel with KeyedMetaMapper[Long,
SampleModel] {
def encodeAsJson(in: SampleModel): JsonAST.JObject = encodeAsJSON_!(in)
def buildFromJson(json: JsonAST.JObject): SampleModel =
decodeFromJSON_!(json)
}
class SampleModel extends KeyedMapper[Long, SampleModel] {
def getSingleton = SampleModel // what's the meta server
def primaryKeyField = id
object id extends MappedLongIndex(this)
object firstName extends MappedString(this, 32)
object moose extends MappedNullableLong(this)
object notNull extends MappedString(this, 32) {
override def dbNotNull_? = true
}
def encodeAsJson(): JsonAST.JObject = SampleModel.encodeAsJson(this)
}
So, you can use this mechanism to serialize a Mapper object to JSON, shovel
the object into memcached and then pull it out, mutate a field and save the
object back to the database (although connection identifier is lost, so if
you are sharding your database, this will not work).
Please give it a try, give me feedback. I'll put it on review board
tomorrow after any feedback and get it into Lift.
Thanks,
David
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Re: [Lift] Re: Mapper - JObject bridge
Thanks, Joni.
On Wed, Dec 16, 2009 at 4:24 PM, Joni Freeman freeman.j...@gmail.comwrote:
Hi,
Yes, that's a way to convert JSON AST to string and vice versa. All
functions in lift-json operate on AST instances. This is lets us post-
and pre-process JSON in many ways before converting it to string. See
for instance functions map, merge, diff, \, etc. defined in JsonAST
(scaladocs still missing but will be provided before Lift 2.0 is
released). Typical conversions might for instance remove some data
from JSON, convert data types, change structure of resulting JSON and
so on.
I usually import all needed objects and their members. After that the
code becomes a bit more concise (the cast is unfortunately needed
since JSON comes from the wild and can be anything):
def encodeAsJsonString(in: A) = compact(render(encodeAsJson(in)))
def buildFromJsonString(json: String): A = buildFromJson(parse
(json).asInstanceOf[JObject])
Cheers Joni
On 16 joulu, 09:03, Xuefeng Wu ben...@gmail.com wrote:
Hi,
I add two method to en/decode JObject/String
def encodeAsJsonString(in: A): String =
Printer.compact(JsonAST.render(encodeAsJson(in)))
def buildFromJsonString(json: String): A =
buildFromJson(JsonParser.parse(json).asInstanceOf[JsonAST.JObject])
Do there have better way?
On Thu, Dec 3, 2009 at 5:15 AM, David Pollak
feeder.of.the.be...@gmail.comwrote:
Folks (HarryH -- this means you),
I've just checked in code on the dpp_issue_213 that does Mapper -
JObject
bridging using the awesome lift-json library.
The methods on MetaMapper:
protected def encodeAsJSON_! (toEncode: A): JsonAST.JObject
protected def decodeFromJSON_!(json: JsonAST.JObject): A
Implement the bridge. They are protected and have a _! in their name
because they are *dangerous* in that data can be exposed on the JSON
object
that you might not want exposed and these methods should be used with
extreme caution.
An example of usage can be found in the MapperSpecs:
object SampleModel extends SampleModel with KeyedMetaMapper[Long,
SampleModel] {
def encodeAsJson(in: SampleModel): JsonAST.JObject =
encodeAsJSON_!(in)
def buildFromJson(json: JsonAST.JObject): SampleModel =
decodeFromJSON_!(json)
}
class SampleModel extends KeyedMapper[Long, SampleModel] {
def getSingleton = SampleModel // what's the meta server
def primaryKeyField = id
object id extends MappedLongIndex(this)
object firstName extends MappedString(this, 32)
object moose extends MappedNullableLong(this)
object notNull extends MappedString(this, 32) {
override def dbNotNull_? = true
}
def encodeAsJson(): JsonAST.JObject = SampleModel.encodeAsJson(this)
}
So, you can use this mechanism to serialize a Mapper object to JSON,
shovel
the object into memcached and then pull it out, mutate a field and save
the
object back to the database (although connection identifier is lost, so
if
you are sharding your database, this will not work).
Please give it a try, give me feedback. I'll put it on review board
tomorrow after any feedback and get it into Lift.
Thanks,
David
--
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Beginning Scalahttp://www.apress.com/book/view/1430219890
Follow me:http://twitter.com/dpp
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Re: [Lift] [ANN] Lift 1.1-M8
anyone will add the source.jar? On Wed, Dec 16, 2009 at 3:33 AM, Jim McBeath goo...@j.jimmc.org wrote: It looks like the source jars are missing from the M8 repository, at least for some of the libraries (for example, http://scala-tools.org/repo-releases/net/liftweb/lift-util/1.1-M8/). Are these perhaps located somewhere else now? Or do they typically get added a bit later? -- Jim On Mon, Dec 14, 2009 at 11:37:02AM -0800, David Pollak wrote: Date: Mon, 14 Dec 2009 11:37:02 -0800 From: David Pollak feeder.of.the.be...@gmail.com To: liftweb liftweb@googlegroups.com Subject: [Lift] [ANN] Lift 1.1-M8 The Lift Web Framework team is pleased to announce the lift-1.1-M8 release! -- 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. -- Scala中文社区: http://groups.google.com/group/scalacn -- 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] lift_successRegisterGC()
I see the following javascript on each of my pages in my site:
// ![CDATA[
jQuery(document).ready(function() {lift_successRegisterGC();});
var lift_page = 'F1212351415633FZT';
// ]]
I don't think its necessary for what I'm doing, is there a way to turn
off this feature?
Thanks!
- Alex
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Re: [Lift] lift_successRegisterGC()
On Wed, Dec 16, 2009 at 5:47 AM, Alex Black a...@alexblack.ca wrote:
I see the following javascript on each of my pages in my site:
// ![CDATA[
jQuery(document).ready(function() {lift_successRegisterGC();});
var lift_page = 'F1212351415633FZT';
// ]]
I don't think its necessary for what I'm doing, is there a way to turn
off this feature?
Are you using any Comet or Ajax or any Lift generated form elements? If you
are using any of these (anything where Lift is storing a function on the
server-side and presenting the function as a GUID on the client side), then
it is strongly advised that you enable GC.
Thanks!
- Alex
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[Lift] Re: lift_successRegisterGC()
Are you using any Comet or Ajax or any Lift generated form elements? If you are using any of these (anything where Lift is storing a function on the server-side and presenting the function as a GUID on the client side), then it is strongly advised that you enable GC. We're not using Comet or Lift generated form elements. We are using a jQuery plugin to do autocomplete which uses ajax. Can you tell me a bit more about GC, is it a jQuery thing? I've turned off auto ajax also: // For now, disable all Lift ajax stuff LiftRules.autoIncludeAjax = session = false So, I get this error on every page: Error: lift_successRegisterGC is not defined and this error on pages that don't use jQuery: Error: jQuery is not defined Thanks! - Alex -- 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.
Re: [Lift] Re: How to disable XHTML?
On 15/12/09 6:31 PM, Tim Nelson wrote:
You need to remove the if guard on the first case match and change the
second parameter you are passing to Req. The second param is for the
context. Try this:
LiftRules.determineContentType = {
case (Full(Req(location :: maps :: testmap :: Nil, _,
GetRequest)), Full(accept)) = text/html; charset=utf-8
case _ = application/xhtml+xml; charset=utf-8
}
However, in this case LiftRules.determineContentType is ignored
completely. You could consider adjusting it like so:
LiftRules.determineContentType = {
case (Full(Req(location :: maps :: testmap :: Nil, _,
GetRequest)), _) =
text/html; charset=utf-8
case (_, Full(accept))
if LiftRules.useXhtmlMimeType
accept.toLowerCase.contains(application/xhtml+xml) =
application/xhtml+xml; charset=utf-8
case _ = text/html; charset=utf-8
}
Cheers, Indrajit
Tim
On Tue, Dec 15, 2009 at 6:09 AM, Tweekd.sztwio...@gmail.com wrote:
It still dosn't work :(
this is path to my html file, which is using google maps api: ./
location/maps/testmap.html
i put in my Boot.scala file this code:
LiftRules.determineContentType = {
case (Full(Req(location :: maps :: testmap :: Nil,
html, GetRequest)), Full(accept))
if LiftRules.useXhtmlMimeType
accept.toLowerCase.contains(application/xhtml+xml) =
text/html; charset=utf-8
case _ = application/xhtml+xml; charset=utf-8
}
i can't disable XHTML in whole projcet becouse then i'm losing
functionality like jquery datepicker etc.
Could You tell me what i did wrong?
Thanks
On 15 Gru, 10:38, Timothy Perretttimo...@getintheloop.eu wrote:
You need to put it in your Boot.scala file.
determineContentType is of PartialFunction[(Box[Req], Box[String]), String]
type - this means that you can match on particular paths:
LiftRules.determineContentType = {
case (Full(Req(some :: path :: Nil, pdf, GetRequest)),
Full(accept))
if LiftRules.useXhtmlMimeType
accept.toLowerCase.contains(application/xhtml+xml) =
application/xhtml+xml; charset=utf-8
case _ = text/html; charset=utf-8
}
Cheers, Tim
On 15 Dec 2009, at 07:58, Tweek wrote:
Thanks for answer Tim.
I know it will be a nooby question, but how i need to define this
site, where i don't want XHTML ?
On 14 Gru, 12:30, Tim Nelsontnell...@gmail.com wrote:
You can use LiftRules.determineContentType to do this. Here is a
sample from my project:
LiftRules.determineContentType = {
case (_, Full(accept)) if LiftRules.useXhtmlMimeType
accept.toLowerCase.contains(application/xhtml+xml) =
application/xhtml+xml; charset=utf-8
case _ = text/html; charset=utf-8
}
Tim
On Mon, Dec 14, 2009 at 3:59 AM, Tweekd.sztwio...@gmail.com wrote:
Hi Guys
Is it possible todisableXHTMLonly in one html file?
When i put
LiftRules.useXhtmlMimeType = false
in Boot.scala then i'll swich this off in whole project.
Is any other place to put this line?
Thanks.
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Re: [Lift] Re: Please review a simple app for displaying Flickr pictures
Wonderful, and thanks for the credits! Cheers, Indrajit On 15/12/09 11:49 PM, Timothy Perrett wrote: Awesome Dave! Thanks for the acknowledgement. Cheers, Tim On 15 Dec 2009, at 18:07, Dave Briccetti wrote: Thanks again for the help. Here are tho talk slides: http://www.slideshare.net/dcbriccetti/birdshow-a-lift-app-for-showing-flickr-photos-2720594 -- 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.
[Lift] Confused about validation
Hello lift people, lift seems very promising. I am trying to make some tests and examples because I am new to lift. I wanted to add some validation to a form element and show the validation error to the user. But after little searching I was a little disappointet to see that there is no such support, exept when using Mapper. I do not want to use Mapper. I want only simple field validation with the errors messages printed in a feedback panel. Before lift I was using Wicket. I think they did a good job with the validators. I try to understand why lift has not such support? I do not want to code everything in my submit method and validate things there. best regards -- 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: lift_successRegisterGC()
Hi David, is there a way to turn off the output of this javascript
code?
On Dec 16, 8:51 am, David Pollak feeder.of.the.be...@gmail.com
wrote:
On Wed, Dec 16, 2009 at 5:47 AM, Alex Black a...@alexblack.ca wrote:
I see the following javascript on each of my pages in my site:
// ![CDATA[
jQuery(document).ready(function() {lift_successRegisterGC();});
var lift_page = 'F1212351415633FZT';
// ]]
I don't think its necessary for what I'm doing, is there a way to turn
off this feature?
Are you using any Comet or Ajax or any Lift generated form elements? If you
are using any of these (anything where Lift is storing a function on the
server-side and presenting the function as a GUID on the client side), then
it is strongly advised that you enable GC.
Thanks!
- Alex
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[Lift] Re: Please review a simple app for displaying Flickr pictures
Hey Dave, great site, beautiful photography. If you had time you might add some URL rewriting, so that galleries had nice urls like: http://briccettiphoto.com/show/galleries/kenya - Alex On Dec 13, 1:44 am, Dave Briccetti da...@davebsoft.com wrote: For a lightning talk at Bay Area Scala Enthusiasts at Twitter HQ Monday, I will show BirdShow, a Lift application that shows photos from Flickr. The current instantiation is a nature photography Web site. Would some of you Lift experts be willing to review the code and comment on the application? I want this to be an example of good Scala and Lift coding. I will gladly acknowledge your help in the presentation. http://briccettiphoto.comhttp://github.com/dcbriccetti/bird-show -- 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: lift_successRegisterGC()
I found this in another thread:
LiftRules.enableLiftGC = false
On Dec 16, 12:55 pm, Alex Black a...@alexblack.ca wrote:
Hi David, is there a way to turn off the output of this javascript
code?
On Dec 16, 8:51 am, David Pollak feeder.of.the.be...@gmail.com
wrote:
On Wed, Dec 16, 2009 at 5:47 AM, Alex Black a...@alexblack.ca wrote:
I see the following javascript on each of my pages in my site:
// ![CDATA[
jQuery(document).ready(function() {lift_successRegisterGC();});
var lift_page = 'F1212351415633FZT';
// ]]
I don't think its necessary for what I'm doing, is there a way to turn
off this feature?
Are you using any Comet or Ajax or any Lift generated form elements? If you
are using any of these (anything where Lift is storing a function on the
server-side and presenting the function as a GUID on the client side), then
it is strongly advised that you enable GC.
Thanks!
- Alex
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[Lift] Re: Duplicate Keys Created by Schemefier
Fair enough, but isn't this still a non-optimal situation with the MySQL database driver? Peter On Dec 15, 7:23 pm, David Pollak feeder.of.the.be...@gmail.com wrote: On Tue, Dec 15, 2009 at 5:46 PM, Peter Robinett pe...@bubblefoundry.comwrote: My tables created by Schemefier have multiple keys for the primary key when my Mapper model is declared like so: class myModel extends LongKeyedMapper[myModel] with IdPK. There is naturally the primary key but there is also a unique key on the column that simply duplicates the functionality of the primary key. Are other people seeing this? I've only looked on MySQL. This seems to be because IdPK adds an id of type MappedLongIndex. Only the longIndexColumnType of MySqlDriver has UNIQUE KEY in its definition. Unique keys are great but, as I mentioned, if the column is also the primary key the index is a duplication. Maybe this is something that IdPK can disable when declaring the column? At least with MySQL primary keys are guaranteed to be unique and InnoDB tables, which Mapper uses, can have issues with long primary keys[1]. Should this be fixed? Or is the more helpful answer 'Don't use MySQL'? ;-) I would use MySQL for a production site. If IdPK isn't doing what you want, then don't use it, just declare the primary key field manually. Peter [1]:http://dev.mysql.com/doc/refman/5.1/en/innodb-index-types.html -- 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] Funny behavior of head merging with nested head blocks
I was diagnosing some incorrect HTML in our application using Lift,
and I found a strange behavior of head merging (I assume) when you
emit a head tag into a head tag from the snippet. The code speaks
better than I do about this:
...
object Dialog extends DispatchSnippet {
val standardDialogOptions: JsObj = JsObj(
autoOpen - false,
bgiframe - true,
modal - true,
resizable - false
)
val dispatch: DispatchIt = {
case head = renderHead
case render = render
}
def renderHead(ns: NodeSeq): NodeSeq =
head{ Script { JsCrVar(pxStandardDialogOptions,
Dialog.standardDialogOptions) } }/head
...
}
LiftRules.snippetDispatch.append {
...
case Dialog = Dialog
...
}
lift:surround with=default at=content
head
titleEmail Editor/title
lift:Dialog.head /
/head
/lift:surround
I agree I'm doing the wrong thing here -- the lift:Dialog.head / tag
rightly should be outside of the head block, or the snippet should not
emit head. However, the resulting behavior is funny (certainly more
funny than I'd expect):
html xmlns:lift=http://liftweb.net/; xmlns=http://www.w3.org/1999/xhtml
head
...
titleEmail Editor/title
script type=text/javascript
// ![CDATA[
var pxStandardDialogOptions = {autoOpen: false, bgiframe: true,
modal: true, resizable: false};
// ]]
/script
headscript type=text/javascript
// ![CDATA[
var pxStandardDialogOptions = {autoOpen: false, bgiframe: true,
modal: true, resizable: false};
// ]]
/script/head
/head
...
/html
Ideally I'd like this to just work so that it doesn't matter
precisely where the snippet is called, though it would be some special
magic just to work around an erroneous case. But, the behavior that
does happen seems odd, duplicating the markup inside the head?
Should I file a bug? Just smile and nod?
-Ross
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Re: [Lift] Funny behavior of head merging with nested head blocks
On Wed, Dec 16, 2009 at 11:55 AM, Ross Mellgren dri...@gmail.com wrote:
I was diagnosing some incorrect HTML in our application using Lift,
and I found a strange behavior of head merging (I assume) when you
emit a head tag into a head tag from the snippet. The code speaks
better than I do about this:
...
object Dialog extends DispatchSnippet {
val standardDialogOptions: JsObj = JsObj(
autoOpen - false,
bgiframe - true,
modal - true,
resizable - false
)
val dispatch: DispatchIt = {
case head = renderHead
case render = render
}
def renderHead(ns: NodeSeq): NodeSeq =
head{ Script { JsCrVar(pxStandardDialogOptions,
Dialog.standardDialogOptions) } }/head
...
}
LiftRules.snippetDispatch.append {
...
case Dialog = Dialog
...
}
lift:surround with=default at=content
head
titleEmail Editor/title
lift:Dialog.head /
/head
/lift:surround
I agree I'm doing the wrong thing here -- the lift:Dialog.head / tag
rightly should be outside of the head block, or the snippet should not
emit head. However, the resulting behavior is funny (certainly more
funny than I'd expect):
html xmlns:lift=http://liftweb.net/; xmlns=http://www.w3.org/1999/xhtml
head
...
titleEmail Editor/title
script type=text/javascript
// ![CDATA[
var pxStandardDialogOptions = {autoOpen: false, bgiframe: true,
modal: true, resizable: false};
// ]]
/script
headscript type=text/javascript
// ![CDATA[
var pxStandardDialogOptions = {autoOpen: false, bgiframe: true,
modal: true, resizable: false};
// ]]
/script/head
/head
...
/html
Ideally I'd like this to just work so that it doesn't matter
precisely where the snippet is called, though it would be some special
magic just to work around an erroneous case. But, the behavior that
does happen seems odd, duplicating the markup inside the head?
Should I file a bug? Just smile and nod?
If we had to recursively check all the head tags for head tags, that
would significantly increase the overhead of the rewrite phase. I would
suggest using the new Helpers.stripHead() call to remove head tags from
stuff you already know is in a head tag.
-Ross
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Re: [Lift] Re: Duplicate Keys Created by Schemefier
On Wed, Dec 16, 2009 at 11:07 AM, Peter Robinett pe...@bubblefoundry.comwrote: Fair enough, but isn't this still a non-optimal situation with the MySQL database driver? What is your proposed change? Peter On Dec 15, 7:23 pm, David Pollak feeder.of.the.be...@gmail.com wrote: On Tue, Dec 15, 2009 at 5:46 PM, Peter Robinett pe...@bubblefoundry.com wrote: My tables created by Schemefier have multiple keys for the primary key when my Mapper model is declared like so: class myModel extends LongKeyedMapper[myModel] with IdPK. There is naturally the primary key but there is also a unique key on the column that simply duplicates the functionality of the primary key. Are other people seeing this? I've only looked on MySQL. This seems to be because IdPK adds an id of type MappedLongIndex. Only the longIndexColumnType of MySqlDriver has UNIQUE KEY in its definition. Unique keys are great but, as I mentioned, if the column is also the primary key the index is a duplication. Maybe this is something that IdPK can disable when declaring the column? At least with MySQL primary keys are guaranteed to be unique and InnoDB tables, which Mapper uses, can have issues with long primary keys[1]. Should this be fixed? Or is the more helpful answer 'Don't use MySQL'? ;-) I would use MySQL for a production site. If IdPK isn't doing what you want, then don't use it, just declare the primary key field manually. Peter [1]:http://dev.mysql.com/doc/refman/5.1/en/innodb-index-types.html -- 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...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: lift_successRegisterGC()
On Wed, Dec 16, 2009 at 5:56 AM, Alex Black a...@alexblack.ca wrote: Are you using any Comet or Ajax or any Lift generated form elements? If you are using any of these (anything where Lift is storing a function on the server-side and presenting the function as a GUID on the client side), then it is strongly advised that you enable GC. To disable Garbage Collection: LiftRules.enableLiftGC = false Each GUID that's shipped to the client for form callbacks, Comet callbacks, Ajax callbacks, JSON callbacks, etc. is associated with a function. That function is stored in a session-specific table that maps from GUIDs to functions. Without garbage collection, the functions associated with the GUIDs build up for the duration of a given session. The can be memory intensive. So, we've implemented a mechanism where every 75 seconds (a tunable parameter), the browser does an Ajax call to the server saying page is still live. All GUIDs associated with that page are kept around. If a GUID hasn't been seen on a page in 10 minutes and is not associated with a Comet component that's still live, then the function is removed from the GUID mapping table and will ultimately be removed from memory by the JVM garbage collector. We're not using Comet or Lift generated form elements. We are using a jQuery plugin to do autocomplete which uses ajax. Can you tell me a bit more about GC, is it a jQuery thing? I've turned off auto ajax also: // For now, disable all Lift ajax stuff LiftRules.autoIncludeAjax = session = false So, I get this error on every page: Error: lift_successRegisterGC is not defined and this error on pages that don't use jQuery: Error: jQuery is not defined Thanks! - Alex -- 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...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: lift_successRegisterGC()
cool, thanks for the info. We're not using those features yet, so we'll leave this off for now. On Dec 16, 4:03 pm, David Pollak feeder.of.the.be...@gmail.com wrote: On Wed, Dec 16, 2009 at 5:56 AM, Alex Black a...@alexblack.ca wrote: Are you using any Comet or Ajax or any Lift generated form elements? If you are using any of these (anything where Lift is storing a function on the server-side and presenting the function as a GUID on the client side), then it is strongly advised that you enable GC. To disable Garbage Collection: LiftRules.enableLiftGC = false Each GUID that's shipped to the client for form callbacks, Comet callbacks, Ajax callbacks, JSON callbacks, etc. is associated with a function. That function is stored in a session-specific table that maps from GUIDs to functions. Without garbage collection, the functions associated with the GUIDs build up for the duration of a given session. The can be memory intensive. So, we've implemented a mechanism where every 75 seconds (a tunable parameter), the browser does an Ajax call to the server saying page is still live. All GUIDs associated with that page are kept around. If a GUID hasn't been seen on a page in 10 minutes and is not associated with a Comet component that's still live, then the function is removed from the GUID mapping table and will ultimately be removed from memory by the JVM garbage collector. We're not using Comet or Lift generated form elements. We are using a jQuery plugin to do autocomplete which uses ajax. Can you tell me a bit more about GC, is it a jQuery thing? I've turned off auto ajax also: // For now, disable all Lift ajax stuff LiftRules.autoIncludeAjax = session = false So, I get this error on every page: Error: lift_successRegisterGC is not defined and this error on pages that don't use jQuery: Error: jQuery is not defined Thanks! - Alex -- 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://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.
Re: [Lift] Re: lift_successRegisterGC()
On Wed, Dec 16, 2009 at 1:30 PM, Alex Black a...@alexblack.ca wrote: cool, thanks for the info. We're not using those features yet, so we'll leave this off for now. If you're not using those features what part of Lift are you using? Can you send the raw HTML (via view source in your browser) of a page? I'm betting that you're using some GUID - function stuff... it's pretty hard not to in Lift. On Dec 16, 4:03 pm, David Pollak feeder.of.the.be...@gmail.com wrote: On Wed, Dec 16, 2009 at 5:56 AM, Alex Black a...@alexblack.ca wrote: Are you using any Comet or Ajax or any Lift generated form elements? If you are using any of these (anything where Lift is storing a function on the server-side and presenting the function as a GUID on the client side), then it is strongly advised that you enable GC. To disable Garbage Collection: LiftRules.enableLiftGC = false Each GUID that's shipped to the client for form callbacks, Comet callbacks, Ajax callbacks, JSON callbacks, etc. is associated with a function. That function is stored in a session-specific table that maps from GUIDs to functions. Without garbage collection, the functions associated with the GUIDs build up for the duration of a given session. The can be memory intensive. So, we've implemented a mechanism where every 75 seconds (a tunable parameter), the browser does an Ajax call to the server saying page is still live. All GUIDs associated with that page are kept around. If a GUID hasn't been seen on a page in 10 minutes and is not associated with a Comet component that's still live, then the function is removed from the GUID mapping table and will ultimately be removed from memory by the JVM garbage collector. We're not using Comet or Lift generated form elements. We are using a jQuery plugin to do autocomplete which uses ajax. Can you tell me a bit more about GC, is it a jQuery thing? I've turned off auto ajax also: // For now, disable all Lift ajax stuff LiftRules.autoIncludeAjax = session = false So, I get this error on every page: Error: lift_successRegisterGC is not defined and this error on pages that don't use jQuery: Error: jQuery is not defined Thanks! - Alex -- 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 liftweb%2bunsubscr...@googlegroups.comliftweb%252bunsubscr...@googlegroups.com liftweb%252bunsubscr...@googlegroups.comliftweb%25252bunsubscr...@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 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...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: lift_successRegisterGC()
Heh. We're only using basic templates/snippets, and url rewriting/
dispatching. We're not using lift forms, ajax, comet, mapper etc. We
just wanted a templating engine that worked well with Scala, and Lift
seems to do that pretty nicely
I'm stubborn - I'm holding to my views that web servers should be as
stateless as possible - using state for callbacks doesn't sit well
with me, yet.
- Alex
On Dec 16, 4:35 pm, David Pollak feeder.of.the.be...@gmail.com
wrote:
On Wed, Dec 16, 2009 at 1:30 PM, Alex Black a...@alexblack.ca wrote:
cool, thanks for the info. We're not using those features yet, so
we'll leave this off for now.
If you're not using those features what part of Lift are you using?
Can you send the raw HTML (via view source in your browser) of a page? I'm
betting that you're using some GUID - function stuff... it's pretty hard
not to in Lift.
On Dec 16, 4:03 pm, David Pollak feeder.of.the.be...@gmail.com
wrote:
On Wed, Dec 16, 2009 at 5:56 AM, Alex Black a...@alexblack.ca wrote:
Are you using any Comet or Ajax or any Lift generated form elements?
If
you
are using any of these (anything where Lift is storing a function on
the
server-side and presenting the function as a GUID on the client
side),
then
it is strongly advised that you enable GC.
To disable Garbage Collection:
LiftRules.enableLiftGC = false
Each GUID that's shipped to the client for form callbacks, Comet
callbacks,
Ajax callbacks, JSON callbacks, etc. is associated with a function. That
function is stored in a session-specific table that maps from GUIDs to
functions. Without garbage collection, the functions associated with the
GUIDs build up for the duration of a given session. The can be memory
intensive. So, we've implemented a mechanism where every 75 seconds (a
tunable parameter), the browser does an Ajax call to the server saying
page
is still live. All GUIDs associated with that page are kept
around. If a GUID hasn't been seen on a page in 10 minutes and is not
associated with a Comet component that's still live, then the function is
removed from the GUID mapping table and will ultimately be removed from
memory by the JVM garbage collector.
We're not using Comet or Lift generated form elements. We are using a
jQuery plugin to do autocomplete which uses ajax. Can you tell me a
bit more about GC, is it a jQuery thing?
I've turned off auto ajax also:
// For now, disable all Lift ajax stuff
LiftRules.autoIncludeAjax = session = false
So, I get this error on every page:
Error: lift_successRegisterGC is not defined
and this error on pages that don't use jQuery:
Error: jQuery is not defined
Thanks!
- Alex
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Re: [Lift] Funny behavior of head merging with nested head blocks
On Dec 16, 2009, at 3:54 PM, David Pollak wrote:
On Wed, Dec 16, 2009 at 11:55 AM, Ross Mellgren dri...@gmail.com
wrote:
I agree I'm doing the wrong thing here -- the lift:Dialog.head / tag
rightly should be outside of the head block, or the snippet should not
emit head. However, the resulting behavior is funny (certainly more
funny than I'd expect):
html xmlns:lift=http://liftweb.net/; xmlns=http://www.w3.org/1999/xhtml
head
...
titleEmail Editor/title
script type=text/javascript
// ![CDATA[
var pxStandardDialogOptions = {autoOpen: false, bgiframe: true,
modal: true, resizable: false};
// ]]
/script
headscript type=text/javascript
// ![CDATA[
var pxStandardDialogOptions = {autoOpen: false, bgiframe: true,
modal: true, resizable: false};
// ]]
/script/head
/head
...
/html
Ideally I'd like this to just work so that it doesn't matter
precisely where the snippet is called, though it would be some special
magic just to work around an erroneous case. But, the behavior that
does happen seems odd, duplicating the markup inside the head?
Should I file a bug? Just smile and nod?
If we had to recursively check all the head tags for head tags,
that would significantly increase the overhead of the rewrite
phase. I would suggest using the new Helpers.stripHead() call to
remove head tags from stuff you already know is in a head tag.
We're pinned to 1.1-M8 now, and I don't think it has the method, but
in any case I'm just going to remove the head from the snippet since
the name of the snippet method implies it should be in the head already.
I was more curious whether the duplication of nodes is something that
should be fixed or at least investigated. Having my snippet called
once but chunks of its output appearing in two places surprised (and
confused) me, it was only when I was creating a reproducible test case
that I realized my mistake was the nested blocks, since the first
appearance of the snippet output had no head around it so it
appeared to be the right thing.
-Ross
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[Lift] Highlighting even/odd rows in a table
Say for a second that in one of my Snippets I have the following
binding:
def view(xhtml: NodeSeq): NodeSeq =
{
val entries: NodeSeq = Customer.findAll() match
{
case Nil = Text(No customers currently defined)
case customers =
customers.flatMap(customer = bind(cust,
chooseTemplate
(customer, entry, xhtml),
name -
Text(emptyIfNull(customer.name.is)),
address - Text
(customer.workAddress.obj.open_!.singleTextLine),
phone -
Text(emptyIfNull(customer.workPhone.is)),
other -
Text(emptyIfNull(customer.other.is)),
fax -
Text(emptyIfNull(customer.workFax.is)),
email -
Text(emptyIfNull(customer.email.is)),
url -
Text(emptyIfNull(customer.email.is
}
bind(customer, xhtml, entry - entries)
}
Is there a way that I could apply a style to a complete customer:entry
with the goal of highlighting even/odd rows?
Let me know and best regards to all,
Steve
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Re: [Lift] Highlighting even/odd rows in a table
You could use customers.zipWithIndex.flatMap({ case (customer, index)
= ... instead of customers.flatMap(customer = to get the index, and
then use index % 2 == 0 to see if it's an even row or an odd row. How
you get that style into your template is up to you -- using an
attribute bind param would probably be pretty easy, or emitting the
td straight out of the snippet.
If you need more guidance give a shout and I'll write you up some
example code.
Note that zipWithIndex only works on List, and it regenerates the
list, so if you have a bunch of customers on the page and are
concerned about performance you might want to do something different
(and less convenient).
-Ross
On Dec 16, 2009, at 5:59 PM, Stevo wrote:
Say for a second that in one of my Snippets I have the following
binding:
def view(xhtml: NodeSeq): NodeSeq =
{
val entries: NodeSeq = Customer.findAll() match
{
case Nil = Text(No customers currently defined)
case customers =
customers.flatMap(customer = bind(cust,
chooseTemplate
(customer, entry, xhtml),
name -
Text(emptyIfNull(customer.name.is)),
address - Text
(customer.workAddress.obj.open_!.singleTextLine),
phone -
Text(emptyIfNull(customer.workPhone.is)),
other -
Text(emptyIfNull(customer.other.is)),
fax -
Text(emptyIfNull(customer.workFax.is)),
email -
Text(emptyIfNull(customer.email.is)),
url -
Text(emptyIfNull(customer.email.is
}
bind(customer, xhtml, entry - entries)
}
Is there a way that I could apply a style to a complete customer:entry
with the goal of highlighting even/odd rows?
Let me know and best regards to all,
Steve
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Re: [Lift] Highlighting even/odd rows in a table
Or delegate the work to the browser using jQuery + CSS
http://docs.jquery.com/Selectors/odd
alex
On Wed, Dec 16, 2009 at 4:04 PM, Ross Mellgren dri...@gmail.com wrote:
You could use customers.zipWithIndex.flatMap({ case (customer, index)
= ... instead of customers.flatMap(customer = to get the index, and
then use index % 2 == 0 to see if it's an even row or an odd row. How
you get that style into your template is up to you -- using an
attribute bind param would probably be pretty easy, or emitting the
td straight out of the snippet.
If you need more guidance give a shout and I'll write you up some
example code.
Note that zipWithIndex only works on List, and it regenerates the
list, so if you have a bunch of customers on the page and are
concerned about performance you might want to do something different
(and less convenient).
-Ross
On Dec 16, 2009, at 5:59 PM, Stevo wrote:
Say for a second that in one of my Snippets I have the following
binding:
def view(xhtml: NodeSeq): NodeSeq =
{
val entries: NodeSeq = Customer.findAll() match
{
case Nil = Text(No customers currently defined)
case customers =
customers.flatMap(customer = bind(cust,
chooseTemplate
(customer, entry, xhtml),
name - Text(emptyIfNull(
customer.name.is)),
address - Text
(customer.workAddress.obj.open_!.singleTextLine),
phone - Text(emptyIfNull(
customer.workPhone.is)),
other - Text(emptyIfNull(
customer.other.is)),
fax - Text(emptyIfNull(
customer.workFax.is)),
email - Text(emptyIfNull(
customer.email.is)),
url - Text(emptyIfNull(
customer.email.is
}
bind(customer, xhtml, entry - entries)
}
Is there a way that I could apply a style to a complete customer:entry
with the goal of highlighting even/odd rows?
Let me know and best regards to all,
Steve
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Re: [Lift] Highlighting even/odd rows in a table
Oh, speaking of jquery, tablesorter also has a zebra plugin that does this,
so if you're tablesorter you can use that also.
-Ross
On Dec 16, 2009, at 9:01 PM, Alex Boisvert wrote:
Or delegate the work to the browser using jQuery + CSS
http://docs.jquery.com/Selectors/odd
alex
On Wed, Dec 16, 2009 at 4:04 PM, Ross Mellgren dri...@gmail.com wrote:
You could use customers.zipWithIndex.flatMap({ case (customer, index)
= ... instead of customers.flatMap(customer = to get the index, and
then use index % 2 == 0 to see if it's an even row or an odd row. How
you get that style into your template is up to you -- using an
attribute bind param would probably be pretty easy, or emitting the
td straight out of the snippet.
If you need more guidance give a shout and I'll write you up some
example code.
Note that zipWithIndex only works on List, and it regenerates the
list, so if you have a bunch of customers on the page and are
concerned about performance you might want to do something different
(and less convenient).
-Ross
On Dec 16, 2009, at 5:59 PM, Stevo wrote:
Say for a second that in one of my Snippets I have the following
binding:
def view(xhtml: NodeSeq): NodeSeq =
{
val entries: NodeSeq = Customer.findAll() match
{
case Nil = Text(No customers currently defined)
case customers =
customers.flatMap(customer = bind(cust,
chooseTemplate
(customer, entry, xhtml),
name -
Text(emptyIfNull(customer.name.is)),
address - Text
(customer.workAddress.obj.open_!.singleTextLine),
phone -
Text(emptyIfNull(customer.workPhone.is)),
other -
Text(emptyIfNull(customer.other.is)),
fax -
Text(emptyIfNull(customer.workFax.is)),
email -
Text(emptyIfNull(customer.email.is)),
url -
Text(emptyIfNull(customer.email.is
}
bind(customer, xhtml, entry - entries)
}
Is there a way that I could apply a style to a complete customer:entry
with the goal of highlighting even/odd rows?
Let me know and best regards to all,
Steve
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Re: [Lift] Scala to JavaScript DSL ...
I'm thinking of an approach to writing a DSL with a much cleaner syntax. I'll
try to put something together.
-
Marius Danciumarius.dan...@gmail.com wrote:
All,
I just want to see if there is any interest in the approach discussed here.
As you know Lift has some interesting support for building JavaScript
constructs from Scala code usig JsExp, JsCmd etc classes. I used quite a lot
this support and it's great but if your JS code that you want to send down
to the browser (say as an Ajax or Comet partial update response) gets a bit
more complicated then constructing the JS fragment leads IMO to some
cumbersome Scala code. I found myselft in quite a few situation to use JsRaw
to write the JavaScript fragment in order for the code reader to understand
what JavaScript code will be generated. But of course with JsRaw we put
everything into a String so I'm not a big fan of this approach. So I started
to define a JavaScript like DSL that IMO is closer to JavaScript form.
Attached is a source code smaple of how this looks like, so for instance we
can have something like:
val js = JsFunc('myFunc, 'param1, 'param2) {
JsIf('param1 __ 30) {
Var('home) := Wrap(234 __- 3) __/ 2 `;`
Var('someArray) := JsArray(1, 2, 3, 4, 5) `;`
'myFunc(1, 2, do it, 'home) `;`
$(#myID) 'attr(value, 123) `;`
} ~
JsForEach(Var('i) in 'someArray) {
'console 'log(Hi there __+ 'i) `;`
} ~
JsAnonFunc('arg1, 'arg2) {
'alert(Anonymous function __+ 'arg1 __+ 'arg2)
}(1, 2) `;`
}
println(js.toJs)
this yields the following JavaScript code:
function myFunc( param1, param2 ) {
if (param1 30) {
var home = ( 234 - 3 ) / 2;
var someArray = [ 1, 2, 3, 4, 5 ];
myFunc(1, 2, do it, home);
$(#myID).attr(value, 123);
}
for (var i in someArray) {
console.log(Hi there + i);
}
function ( arg1, arg2 ) {
alert(Anonymous function + arg1 + arg2)
}(1, 2);
}
... ok I just droped nonsense code in there for exemplification. A few
words:
1. JsIf, JsForEach describe JavaScript if and for(each) statements
2. Functions like __, __, ... __+, __- are function that alows definition
of boolean and/or algebraic expressions.
3. Wrap just wraps an expression into ()
4. Var defined a variable
5 := defines an assignment
6. JsFunc declares a JS function
7. JsAnonFunc declares an anonymous function
8. 'myFunc(1, 2, do it, 'home) is simply a javascript function invocation
by providing 4 parameter.
9. ~ is just a function that chains statements that don;t necessarily end in
;
Do you think that something like this would be usable in Lift?
Br's,
Marius
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[Lift] Re: Latest API Documentation
I would also appreciate aggregated docs. It would be great to have these at least for the M-releases.. - Vesa On 7 marras, 05:47, aw anth...@whitford.com wrote: OK, so I can go tohttp://scala-tools.org/mvnsites/liftweb-1.1-7/ but I am not finding a comprehensive ScalaDoc similar to what is available here:http://scala-tools.org/scaladocs/liftweb/1.0/ It is hard (and SLOW) for me to figure out which component a class/ object might reside, and find its corresponding ScalaDoc... Or am I not seeing it? -- 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: Scala to JavaScript DSL ...
Let me know when you have something.
Br's,
Marius
On Dec 17, 8:58 am, Naftoli Gugenheim naftoli...@gmail.com wrote:
I'm thinking of an approach to writing a DSL with a much cleaner syntax. I'll
try to put something together.
-
Marius Danciumarius.dan...@gmail.com wrote:
All,
I just want to see if there is any interest in the approach discussed here.
As you know Lift has some interesting support for building JavaScript
constructs from Scala code usig JsExp, JsCmd etc classes. I used quite a lot
this support and it's great but if your JS code that you want to send down
to the browser (say as an Ajax or Comet partial update response) gets a bit
more complicated then constructing the JS fragment leads IMO to some
cumbersome Scala code. I found myselft in quite a few situation to use JsRaw
to write the JavaScript fragment in order for the code reader to understand
what JavaScript code will be generated. But of course with JsRaw we put
everything into a String so I'm not a big fan of this approach. So I started
to define a JavaScript like DSL that IMO is closer to JavaScript form.
Attached is a source code smaple of how this looks like, so for instance we
can have something like:
val js = JsFunc('myFunc, 'param1, 'param2) {
JsIf('param1 __ 30) {
Var('home) := Wrap(234 __- 3) __/ 2 `;`
Var('someArray) := JsArray(1, 2, 3, 4, 5) `;`
'myFunc(1, 2, do it, 'home) `;`
$(#myID) 'attr(value, 123) `;`
} ~
JsForEach(Var('i) in 'someArray) {
'console 'log(Hi there __+ 'i) `;`
} ~
JsAnonFunc('arg1, 'arg2) {
'alert(Anonymous function __+ 'arg1 __+ 'arg2)
}(1, 2) `;`
}
println(js.toJs)
this yields the following JavaScript code:
function myFunc( param1, param2 ) {
if (param1 30) {
var home = ( 234 - 3 ) / 2;
var someArray = [ 1, 2, 3, 4, 5 ];
myFunc(1, 2, do it, home);
$(#myID).attr(value, 123);}
for (var i in someArray) {
console.log(Hi there + i);}
function ( arg1, arg2 ) {
alert(Anonymous function + arg1 + arg2)
}(1, 2);
}
... ok I just droped nonsense code in there for exemplification. A few
words:
1. JsIf, JsForEach describe JavaScript if and for(each) statements
2. Functions like __, __, ... __+, __- are function that alows definition
of boolean and/or algebraic expressions.
3. Wrap just wraps an expression into ()
4. Var defined a variable
5 := defines an assignment
6. JsFunc declares a JS function
7. JsAnonFunc declares an anonymous function
8. 'myFunc(1, 2, do it, 'home) is simply a javascript function invocation
by providing 4 parameter.
9. ~ is just a function that chains statements that don;t necessarily end in
;
Do you think that something like this would be usable in Lift?
Br's,
Marius
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