Okay i got this so far, only one tiny thing i can't get to work now:
trait Stamped[A <: LongKeyedMapper[A]] extends KeyedMetaMapper[Long,
A] {
self: A with MetaMapper[A] with KeyedMapper[Long, A] =>
private val thisTyped = this.asInstanceOf[MapperType]
override def afterSave = createSaveLog _ :: super.afterSave
override def afterUpdate = createUpdateLog _ :: super.afterSave
override def afterDelete = createDeleteLog _ :: super.afterSave
private def createSaveLog(obj: A) = createLog(obj, "create")
private def createUpdateLog(obj: A) = createLog(obj, "update")
private def createDeleteLog(obj: A) = createLog(obj, "delete")
private def createLog(obj: A, action: String) {
val log = new ActionLog
log.action(action).klass(obj.getClass.toString).record(obj.id).save
}
}
The problem relies in the last method called. log.action... at obj.id.
Where do i have to define that A (obj) is with IdPK?
After that this should be working.
Ah one scala syntax question. why can't i call createLog(_, "create")
at the List?
On 30 Jul., 01:22, David Pollak <feeder.of.the.be...@gmail.com> wrote:
> On Wed, Jul 29, 2009 at 4:21 PM, fbettag <fr...@bett.ag> wrote:
>
> > Btw. the docs for KeyedMapper don't work..
>
> >http://scala-tools.org/scaladocs/liftweb/1.0/net/liftweb/mapper/Keyed...
> > when i click on KeyType or OwnerType it gives me a 404..
>
> This is a limitation of vscaladoc... sorry.
>
>
>
>
>
> > On 30 Jul., 00:55, David Pollak <feeder.of.the.be...@gmail.com> wrote:
> > > It's not pretty, but:
>
> > > trait MyLogger[A <: KeyedMapper[K, A], K] extends KeyedMetaMapper[K,A] {
> > > self: A with MetaMapper[A] with KeyedMapper[K, A] =>
>
> > > override def afterSave = doSomething _ :: super.afterSave
>
> > > private def doSomething(in: A) {
> > > println("Got "+in)
> > > }
>
> > > }
> > > On Wed, Jul 29, 2009 at 3:35 PM, fbettag <fr...@bett.ag> wrote:
>
> > > > Hm. i changed it to this:
> > > > trait Stamped[OwnerType <: Mapper[OwnerType] with IdPK] {
> > > > self: MetaMapper[OwnerType] =>
>
> > > > private val thisTyped = this.asInstanceOf[MapperType]
>
> > > > override def afterSave: List[Any] = {
> > > > createActionLog("create", this.getClass.toString,
> > > > thisTyped.id)
> > > > return List(None)
> > > > }
>
> > > > def afterUpdate: List[Any] = {
> > > > createActionLog("update", this.getClass.toString,
> > > > thisTyped.id)
> > > > return List(None)
> > > > }
>
> > > > def beforeDelete: List[Any] = {
> > > > createActionLog("delete", this.getClass.toString,
> > > > thisTyped.id)
> > > > return List(None)
> > > > }
>
> > > > private def createActionLog(action: String, klass: String, obj:
> > > > Long)
> > > > {
> > > > val log = new ActionLog
> > > > log.action(action).klass(klass).record(obj).save
> > > > }
>
> > > > }
>
> > > > and i extend the object now and not the class. still i get these:
>
> > > > src/main/scala/ag/bett/lift/cms/lib/Stamped.scala:12: error: method
> > > > afterSave overrides nothing
> > > > override def afterSave: List[Any] = {
> > > > ^
> > > > method afterSave in trait Stamped of type => List[Any] needs
> > > > `override' modifier
> > > > object Content extends Content with LongKeyedMetaMapper[Content] with
> > > > Stamped[Content] {
> > > > ^
>
> > > > This is voodoo again :(
>
> > > > On 29 Jul., 22:55, David Pollak <feeder.of.the.be...@gmail.com> wrote:
> > > > > trait Foo[A <: Mapper[A]] {
> > > > > self: MetaMapper[A] =>
>
> > > > > }
> > > > > On Wed, Jul 29, 2009 at 1:38 PM, fbettag <fr...@bett.ag> wrote:
>
> > > > > > Yes thanks, it gives me an idea of the issue which i now see.
> > > > > > Could you provide a very simple example on how you would make the
> > Meta-
> > > > > > Mixin?
> > > > > > That would be very good
>
> > > > > > best regards
>
> > > > > > On 29 Jul., 21:55, David Pollak <feeder.of.the.be...@gmail.com>
> > wrote:
> > > > > > > On Tue, Jul 28, 2009 at 5:12 PM, fbettag <fr...@bett.ag> wrote:
>
> > > > > > > > So far it looks like this:
>
> > > > > > > > trait Stamped[OwnerType <: Stamped[OwnerType] with
> > LongKeyedMapper
> > > > > > > > [OwnerType] with IdPK] {
> > > > > > > > this: OwnerType =>
>
> > > > > > > > private val thisTyped = this.asInstanceOf[MapperType]
>
> > > > > > > > override def afterSave {
> > > > > > > > createActionLog("create",
> > this.getClass.toString,
> > > > > > this.id)
> > > > > > > > }
>
> > > > > > > There's no afterSave method on Mapper... that method is on
> > > > MetaMapper.
>
> > > > > > > You need to split your trait into two pieces... one that will be
> > > > mixed
> > > > > > into
> > > > > > > the model instances and one that'll be mixed into the Meta model
> > > > > > singleton
> > > > > > > (or perhaps just one mixed into the Meta).
>
> > > > > > > In terms of the afterSave (and other before and after stuff)
> > method
> > > > on
> > > > > > > MetaMapper, that method returns a List of functions that take the
> > > > > > instance
> > > > > > > as a model that's being saved and does something. I've changed
> > the
> > > > > > > signature to List[A => Unit] rather than List[A => Any] to avoid
> > > > > > confusion
> > > > > > > about the fact that the functions are not meant to return
> > anything.
>
> > > > > > > Does this help?
>
> > > > > --
> > > > > Lift, the simply functional web frameworkhttp://liftweb.net
> > > > > Beginning Scalahttp://www.apress.com/book/view/1430219890
> > > > > Follow me:http://twitter.com/dpp
> > > > > Git some:http://github.com/dpp
>
> > > --
> > > Lift, the simply functional web frameworkhttp://liftweb.net
> > > Beginning Scalahttp://www.apress.com/book/view/1430219890
> > > Follow me:http://twitter.com/dpp
> > > Git some:http://github.com/dpp
>
> --
> Lift, the simply functional web frameworkhttp://liftweb.net
> Beginning Scalahttp://www.apress.com/book/view/1430219890
> Follow me:http://twitter.com/dpp
> Git some:http://github.com/dpp
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