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 framework http://liftweb.net
Beginning Scala http://www.apress.com/book/view/1430219890
Follow me: http://twitter.com/dpp
Git some: http://github.com/dpp
--~--~---------~--~----~------------~-------~--~----~
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
-~----------~----~----~----~------~----~------~--~---
