[Lift] Mapper with id=-1
Hi, i am using two Mapper classes, both extend LongKeyedMapper[..] with IdPK. After saving (returns true for both) one class always has id=-1, the id of the other class counts up as expected. The id is however correct when i list the table from another snippet. Any hints? Thanks, Steffen. --~--~-~--~~~---~--~~ 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 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: Mapper with id=-1
Sorry, it was a beginning scala problem: Instead of val prod = Product.create i had def prod = Product.create... then prod.save returned true and prod.id=-1... Also sorry for posting this twice, but for some reason it took several hours until the mails showed up on the list, I didn't expect that... BTW: I have bought your Lift book (the paper version...), and I am a little disappointed that it has neither an appendix nor an index. What was the reason for that? Cheers, Steffen. On Tue, Aug 11, 2009 at 8:34 PM, Derek Chen-Beckerdchenbec...@gmail.com wrote: Is it always the same one that gets a correct ID, and if you comment out that save does the other one get a correct ID? I'm just wondering if there's something sequential related to retrieving the generated IDs. Derek On Tue, Aug 11, 2009 at 6:25 AM, Steffen Weißmann steffen.weissm...@googlemail.com wrote: Hi, i am using two Mapper classes, both extend LongKeyedMapper[..] with IdPK. After saving (returns true for both) one class always has id=-1, the id of the other class counts up as expected. The id is however correct when i list the table from another snippet. Any hints? Thanks, Steffen. -- Steffen Weissmann Technische Universitaet Berlin - Math. Department - MA 3-2 Str. des 17. Juni 136 10623 Berlin - Germany Phone: +49 30 314-29278 Mail: weissm...@math.tu-berlin.de Web: www.math.tu-berlin.de/~weissman --~--~-~--~~~---~--~~ 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 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: Mapper with id=-1
I was aware of master.pdf before I ordered the book. Somehow I had expected that the publisher would do some value-adding for the print version, like formatting and indexing. When I tried to follow a See appendix... hint in the book for the first time I thought amazon had sent me a misprint version... Another thing that I really miss is a page header telling the current chapter. Just in case you publish a second edition ;-) Nonetheless thanks for writing the book! Steffen. We're also disappointed that the book had neither an index or the appendices. Their omission was due to some issues with the way that APress handles FirstPress books. The index was definitely not possible for them, and the removal of the appendices was done so that the book would be printed in time (their printing workflow supposedly didn't allow for X chapters and would have had to been rewritten). The appendices are available in PDF here: http://www.apress.com/book/downloadfile/4390 If you want a full PDF with index and appendices, you can check out the open-source version of the book here: http://groups.google.com/group/the-lift-book The master.pdf under Files is the most up-to-date version, and as I have time I update it with feedback. The two versions aren't 100% identical but they are very similar. Derek On Tue, Aug 11, 2009 at 1:01 PM, Steffen Weißmann steffen.weissm...@googlemail.com wrote: Sorry, it was a beginning scala problem: Instead of val prod = Product.create i had def prod = Product.create... then prod.save returned true and prod.id=-1... Also sorry for posting this twice, but for some reason it took several hours until the mails showed up on the list, I didn't expect that... BTW: I have bought your Lift book (the paper version...), and I am a little disappointed that it has neither an appendix nor an index. What was the reason for that? Cheers, Steffen. On Tue, Aug 11, 2009 at 8:34 PM, Derek Chen-Beckerdchenbec...@gmail.com wrote: Is it always the same one that gets a correct ID, and if you comment out that save does the other one get a correct ID? I'm just wondering if there's something sequential related to retrieving the generated IDs. Derek On Tue, Aug 11, 2009 at 6:25 AM, Steffen Weißmann steffen.weissm...@googlemail.com wrote: Hi, i am using two Mapper classes, both extend LongKeyedMapper[..] with IdPK. After saving (returns true for both) one class always has id=-1, the id of the other class counts up as expected. The id is however correct when i list the table from another snippet. Any hints? Thanks, Steffen. -- Steffen Weissmann Technische Universitaet Berlin - Math. Department - MA 3-2 Str. des 17. Juni 136 10623 Berlin - Germany Phone: +49 30 314-29278 Mail: weissm...@math.tu-berlin.de Web: www.math.tu-berlin.de/~weissman --~--~-~--~~~---~--~~ 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 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 do you initialise a MappedLongForeignKey object?
I think the problem is the new Address. You need
Address.create.save. My code is:
def addAddress(form: NodeSeq) = {
val user = User.currentUser.open_!
val addr = user.address.obj.openOr {
val newAdr = Address.create
newAdr.save
user.address(newAdr).save
println(Creating new Address for user
+user.firstName+ +user.lastName)
newAdr
}
def doBind(form: NodeSeq): NodeSeq =
table{bind(form, form,
table -
addr.toForm(Full(S.?(address.submit)), doBind, addr
= addr.save)
)}/table
doBind(form)
}
Steffen.
On Tue, Aug 11, 2009 at 10:48 PM, Naftoli Gugenheimnaftoli...@gmail.com wrote:
Try mixing in LongMappedForeignMapper to address, or calling
address.primeObj(addressObj).
What doesn't work the way you tried?
-
georgegeo...@mattandgeorge.com wrote:
I have extended MegaProtoUser in order to add a related Address object
which is a MappedLongForeignKey.
The idea being simply that there is a 1 to 1 relationship between a
User and their Address.
When a new User object is instantiated (but not yet persisted), I want
to be able to get the related address object like this:
user.address.obj
But the returned Box is always empty, I guess because nothing has been
saved yet.
I need to somehow initialise the address if it is Empty otherwise
return the current Address.
I thought something like this would work, but it doesn't:
user.address.obj.openOr(user.address(new Address).address.obj.open_!)
Anyone know how to do this properly?
--
Steffen Weissmann
Technische Universitaet Berlin - Math. Department - MA 3-2
Str. des 17. Juni 136
10623 Berlin - Germany
Phone: +49 30 314-29278
Mail: weissm...@math.tu-berlin.de
Web: www.math.tu-berlin.de/~weissman
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[Lift] Re: Eclipse setup
See if the following configuration helps you as it solved most of my problems. http://blog.spiralarm.com/richard/2009/07/using-existing-scala-maven-project-in.html Thanks, works much better now. I create the eclipse project via mvn eclipse:eclipse, import it, remove all src-folders and add only src/main/scala back as a source folder, with default output path target/classes. And I have removed the maven plugin completely, I think that helped a lot... Now I can really use eclipse again, thanks! Cheers, Steffen. Cheers Jono On 07/08/2009, at 6:44 AM, Steffen Weißmann wrote: You have two output folders: the Scala IDE = 2.7.5.final only supports one. Use a single default output folder. That helped somehow, at least in the Boot.scala file it was pretty much ok. But the other files were no better. For instance, clicking on MetaProtoUser still opens Object.java source... You also have source directories nested below the top level of your project. Although I've seen reports that this works from various people, there's code in 2.7.5.final and earlier which makes this unlikely. If switching to a single output folder doesn't solve your problems try also moving your source directories to the top level. I tried to move the scala src folder src/main/scala to the project root, but that didn't improve things. I really would like to use eclipse, but right now i am using idea (even though I completely agree with David Pollaks blog posts...) since it usually understands the scala source code and it usually displays the lift code (and also other code) properly. I guess several people are developing lift projects with eclipse, so I hope there is a chance to get it working. Is there any configuration (Eclipse version+plugin versions+project setup) that is known to work? Both of these issues are fixed on trunk (but don't go there unless you're using the Lift 2.8.0 branch). Unfortunately it didn't help to avoid these two issues... Let me know how you get on ... Well, I switched to idea for now, and i don't like it. Would it make sense to use the trunk version? Cheers, Steffen. Cheers, Miles -- Miles Sabin tel: +44 (0)7813 944 528 skype: milessabin http://www.chuusai.com/ http://twitter.com/milessabin -- Steffen Weissmann Technische Universitaet Berlin - Math. Department - MA 3-2 Str. des 17. Juni 136 10623 Berlin - Germany Phone: +49 30 314-29278 Mail: weissm...@math.tu-berlin.de Web: www.math.tu-berlin.de/~weissman -- Steffen Weissmann Technische Universitaet Berlin - Math. Department - MA 3-2 Str. des 17. Juni 136 10623 Berlin - Germany Phone: +49 30 314-29278 Mail: weissm...@math.tu-berlin.de Web: www.math.tu-berlin.de/~weissman --~--~-~--~~~---~--~~ 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 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: Eclipse setup
You have two output folders: the Scala IDE = 2.7.5.final only supports one. Use a single default output folder. That helped somehow, at least in the Boot.scala file it was pretty much ok. But the other files were no better. For instance, clicking on MetaProtoUser still opens Object.java source... You also have source directories nested below the top level of your project. Although I've seen reports that this works from various people, there's code in 2.7.5.final and earlier which makes this unlikely. If switching to a single output folder doesn't solve your problems try also moving your source directories to the top level. I tried to move the scala src folder src/main/scala to the project root, but that didn't improve things. I really would like to use eclipse, but right now i am using idea (even though I completely agree with David Pollaks blog posts...) since it usually understands the scala source code and it usually displays the lift code (and also other code) properly. I guess several people are developing lift projects with eclipse, so I hope there is a chance to get it working. Is there any configuration (Eclipse version+plugin versions+project setup) that is known to work? Both of these issues are fixed on trunk (but don't go there unless you're using the Lift 2.8.0 branch). Unfortunately it didn't help to avoid these two issues... Let me know how you get on ... Well, I switched to idea for now, and i don't like it. Would it make sense to use the trunk version? Cheers, Steffen. Cheers, Miles -- Miles Sabin tel: +44 (0)7813 944 528 skype: milessabin http://www.chuusai.com/ http://twitter.com/milessabin -- Steffen Weissmann Technische Universitaet Berlin - Math. Department - MA 3-2 Str. des 17. Juni 136 10623 Berlin - Germany Phone: +49 30 314-29278 Mail: weissm...@math.tu-berlin.de Web: www.math.tu-berlin.de/~weissman --~--~-~--~~~---~--~~ 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 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: Eclipse setup
Can you show me the contents of your .project and .classpath files. Both files attached. Thanks for looking into it... On Wed, Aug 5, 2009 at 11:34 PM, Miles Sabinmi...@milessabin.com wrote: On Wed, Aug 5, 2009 at 10:21 PM, steffen.weissmannsteffen.weissm...@googlemail.com wrote: I have trouble with getting started with lift in eclipse. In my project, created from lift-archetype-basic 1.1-SNAPSHOT, i have all the lift jars with attached sources (all in the maven repository) under Referenced Libraries. I can also browse the source code by double-clicking on the classes there, but i have no code completion for many of these classes. Sometimes when Ctrl-clicking on a Scala type it opens Object.java source... What I am using is Eclipse Galileo with Scala plugin 2.7.5. This sounds like Maven breakage yet again. Can you show me the contents of your .project and .classpath files. Cheers, Miles -- Miles Sabin tel: +44 (0)7813 944 528 skype: milessabin http://www.chuusai.com/ http://twitter.com/milessabin -- Steffen Weissmann Technische Universitaet Berlin - Math. Department - MA 3-2 Str. des 17. Juni 136 10623 Berlin - Germany Phone: +49 30 314-29278 Mail: weissm...@math.tu-berlin.de Web: www.math.tu-berlin.de/~weissman --~--~-~--~~~---~--~~ 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 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 -~--~~~~--~~--~--~--- .classpath Description: Binary data .project Description: Binary data
