may i ask what the "is" method exactly does? googling for it is a bit
hard since "is" is quite commonly used ;)
On 19 Jan., 21:39, Ross Mellgren <dri...@gmail.com> wrote:
> I see primaryKeyField in the docs, maybe try .record(obj.primaryKeyField.is) ?
>
> -Ross
>
> On Jan 19, 2010, at 3:31 PM, Franz Bettag wrote:
>
> > trait Stamped[A <: LongKeyedMapper[A]]
> > extends SkipLogging with KeyedMetaMapper[Long, A] {
>
> > self: A with MetaMapper[A] with KeyedMapper[Long, A] =>
>
> > override def afterCreate = (crudLog(_: A, "create")) ::
> > super.afterCreate
>
> > override def afterUpdate = (crudLog(_: A, "update")) ::
> > super.afterUpdate
>
> > override def afterDelete = (crudLog(_: A, "delete")) ::
> > super.afterDelete
>
> > private def crudLog(obj: A, action: String): Unit = {
> > if (!self.skipLogging) {
> > val log = new ActionLog
> > log.action(action).klass(obj.getClass.getName).record
> > (obj.primaryKey).save
> > // Stamped.scala:54: error: value primaryKey is not a member of A
> > }
> > }
>
> > }
>
> > On 19 Jan., 21:22, David Pollak <feeder.of.the.be...@gmail.com> wrote:
> >> You don't need to use structural typing.
>
> >> Any KeyedMapper has a primaryKey method that returns a Mapped field of the
> >> type of the key. To get the primary key field of a given KeyedMapper
> >> instance, just call primaryKey.
>
> >> On Tue, Jan 19, 2010 at 11:55 AM, Ross Mellgren <dri...@gmail.com> wrote:
> >>> How about structural typing?
>
> >>> trait Stamped[A <: LongKeyedMapper[A] with { val id: MappedLongIndex[A] }]
> >>> ...
>
> >>> I haven't tried it, but maybe it will work.
>
> >>> -Ross
>
> >>> On Jan 19, 2010, at 2:47 PM, Franz Bettag wrote:
>
> >>>> On 19 Jan., 19:32, David Pollak <feeder.of.the.be...@gmail.com> wrote:
> >>>>>> i am trying to extend my logging trait. The Problem is, i can't say
> >>>>>> something like A <: LongKeyedMapper[A] in my trait since ProtoUser
> >>>>>> doesn't use IdPK but uses it's own declarations (which look the same
> >>>>>> to me).
>
> >>>>> Why do you need ProtoUser extended with IdPK? Why can't your trait work
> >>>>> with LongKeyedMapper?
>
> >>>> The code relies on having a .id method on the passed object. The Three
> >>>> Traits are below. It works fine with anything having IdPK. At the
> >>>> moment i have this code copied into my User singleton which is exactly
> >>>> what i want to avoid.
>
> >>>> I don't know how i would dynamify the use of the .id method. In
> >>>> ActionLog and the Stamped trait.
>
> >>>> trait Stamped[A <: LongKeyedMapper[A] with IdPK]
> >>>> extends SkipLogging with KeyedMetaMapper[Long, A] {
>
> >>>> self: A with MetaMapper[A] with KeyedMapper[Long, A] =>
>
> >>>> override def afterCreate = (crudLog(_: A, "create")) ::
> >>>> super.afterCreate
>
> >>>> override def afterUpdate = (crudLog(_: A, "update")) ::
> >>>> super.afterUpdate
>
> >>>> override def afterDelete = (crudLog(_: A, "delete")) ::
> >>>> super.afterDelete
>
> >>>> private def crudLog(obj: A, action: String): Unit = {
> >>>> if (!self.skipLogging) {
> >>>> val log = new ActionLog
>
> >>> log.action(action).klass(obj.getClass.getName).record(obj.id).save
> >>>> }
> >>>> }
>
> >>>> }
>
> >>>> trait SkipLogging {
>
> >>>> var skipLogging = false
> >>>> }
>
> >>>> trait ActionLogs[A <: Mapper[A] with IdPK] {
>
> >>>> this: A =>
>
> >>>> def logs: List[ActionLog] = ActionLog.findAll(
> >>>> By(ActionLog.klass, this.getClass.getName),
> >>>> By(ActionLog.record, this.id)
> >>>> )
>
> >>>> }
>
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> >> --
> >> Lift, the simply functional web frameworkhttp://liftweb.net
> >> Beginning Scalahttp://www.apress.com/book/view/1430219890
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