[Lift] Re: net.liftweb.mapper.PreCache doesn't work well as my expect
Thank you David,
I found that I'm using lift-1.0.
After i changed to 1.1 snapshot, it works well now.
thanks
On Aug 26, 5:32 am, David Pollak feeder.of.the.be...@gmail.com
wrote:
PreCache works as expected.
Here's the data model:
class RoomChoice extends LongKeyedMapper[RoomChoice] with IdPK {
def getSingleton = RoomChoice
object name extends MappedPoliteString(this, 512)
object price extends MappedInt(this){
override def defaultValue = 0
}
}
object RoomChoice extends RoomChoice with LongKeyedMetaMapper[RoomChoice]
class User extends LongKeyedMapper[User] with IdPK {
def getSingleton = User
object account extends MappedPoliteString(this, 10)
object roomChoice extends MappedLongForeignKey(this, RoomChoice)
}
object User extends User with LongKeyedMetaMapper[User]
And here's the test:
for {
i - 1 to 50
} {
User.create.roomChoice(RoomChoice.create.name(Fog +i).saveMe).save
}
User.findAll(PreCache(User.roomChoice)).foreach{
u = if (!u.roomChoice.cached_?) error(Failed +u)
}
User.findAll().foreach{
u = if (u.roomChoice.cached_?) error(Failed +u)
}
val rooms =
User.findAll(PreCache(User.roomChoice)).flatMap(_.roomChoice.obj)
println(Rooms +rooms)
I'm enclosing code the demonstrate the functionality. Please let us know if
there's something missing.
Thanks,
David
On Mon, Aug 24, 2009 at 9:16 PM, koji koji@gmail.com wrote:
Oops, so sorry for pasting wrong part.
And sorry i didnt show my model's code
my code is as below
class RoomChoice extends LongKeyedMapper[RoomChoice] with IdPK {
def getSingleton = RoomChoice
object travel extends MappedLongForeignKey(this, Travel)
object name extends MappedPoliteString(this, 512)
object price extends MappedInt(this){
override def defaultValue = 0
}
}
class User extends LongKeyedMapper[User] with IdPK {
def getSingleton = User
object travel extends MappedLongForeignKey(this, Travel)
object account extends MappedPoliteString(this, 10)
object roomChoice extends MappedLongForeignKey(this,
RoomChoice)
}
val users = User.findAll(By(User.travel, travelId),PreCache
(User.roomChoice), OrderBy(User.id, Ascending))
thank you
On Aug 25, 6:40 am, Derek Chen-Becker dchenbec...@gmail.com wrote:
Maybe I'm missing something, but you're telling Mapper to pre-cache
User.roomChoice, but then you're accessing User.fromPlace. Are those two
fields related somehow?
Derek
On Mon, Aug 24, 2009 at 12:25 AM, koji koji@gmail.com wrote:
Hi all,
I want to avoid n+1 problem
so i try to write my code as
val users = User.findAll(PreCache(User.roomChoice), By(User.travel,
travelId))
and i saw the sql generated only once for querying roomChoice.
but when i using the
u.fromPlace.obj, it always become Empty(u.fromPace has correct value)
thanks
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[Lift] net.liftweb.mapper.PreCache doesn't work well as my expect
Hi all, I want to avoid n+1 problem so i try to write my code as val users = User.findAll(PreCache(User.roomChoice), By(User.travel, travelId)) and i saw the sql generated only once for querying roomChoice. but when i using the u.fromPlace.obj, it always become Empty(u.fromPace has correct value) thanks --~--~-~--~~~---~--~~ 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: the question abount HelloForm2 of example darwin
Thank you Tim, That helps me. koji On 7月28日, 上午6時40分, Timothy Perrett timo...@getintheloop.eu wrote: Hey Koji, So I took a look at your problem and made an example, please check the code here under basic-forms: http://github.com/timperrett/lift-examples/tree/master I have a feeling that S.param used to work differently... lift assigns random names to the inputs at runtime for security, so doing S.param (whoField) wont get you anywhere anyways; IMHO this is a bug in the example, not your code. You might want to check my examples anyway though as i've made some changes and added comments you might find helpful. Cheers, Tim --~--~-~--~~~---~--~~ 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] the question abount HelloForm2 of example darwin
Hi, I'm trying the HelloForm2 of darwin example. The second version of HelloForm2 that who var is RequestVar shows correct on the rendered page, but always showing Empty in my console using param(whofield). Am i do something wrong? --~--~-~--~~~---~--~~ 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: the question abount HelloForm2 of example darwin
thx Tim, I paste my code to the git. here is the index.html http://gist.github.com/156445 and HelloWorld.scala http://gist.github.com/156446 and param(whoField) always shows Empty thanks, koji On Jul 27, 10:45 pm, Timothy Perrett timo...@getintheloop.eu wrote: Hey koji, Perhaps this article will help:http://is.gd/sfyT Otherwise, can you post the code your using? (perhaps onto gist.github.com) Cheers, Tim On Jul 27, 11:11 am, koji koji@gmail.com wrote: Hi, I'm trying the HelloForm2 of darwin example. The second version of HelloForm2 that who var is RequestVar shows correct on the rendered page, but always showing Empty in my console using param(whofield). Am i do something wrong? --~--~-~--~~~---~--~~ 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 -~--~~~~--~~--~--~---
