Foo = Venue, Bar = VenueAlias, Baz = Checkin
lazy val checkins = Checkin.findAll(In.fk(Checkin.aliasid, By
(VenueAlias.venueid, this.id)))
confusing error message on compile:
found : com.harryh.model.Checkin.aliasid.type (with underlying type
object com.harryh.model.Checkin.aliasid)
required: net.liftweb.mapper.MappedForeignKey
[?,?,com.harryh.model.Checkin]
Note that implicit conversions are not applicable because they are
ambiguous:
both method mapToType in object MappedField of type [T,A <:
net.liftweb.mapper.Mapper[A]](net.liftweb.mapper.MappedField[T,A])T
and method mapToType in object MappedField of type [T,A <:
net.liftweb.mapper.Mapper[A]](net.liftweb.mapper.MappedField[T,A])T
are possible conversion functions from
com.harryh.model.Checkin.aliasid.type to
net.liftweb.mapper.MappedForeignKey[?,?,com.harryh.model.Checkin]
lazy val checkins = Checkin.findAll(In.fk(Checkin.aliasid, By
(VenueAlias.venueid, this.id)))
On Aug 13, 4:20 pm, David Pollak <feeder.of.the.be...@gmail.com>
wrote:
> On Thu, Aug 13, 2009 at 12:41 PM, harryh <har...@gmail.com> wrote:
>
> > I have 3 classes like so
>
> > class Foo extends LongKeyedMapper[Foo] with IdPK
> > def getBazes = {
> > Baz.findAll(...)
> > }
> > }
>
> Baz.findAll(In.fk(Baz.barid, By(Bar.fooid, this.id)))
>
>
>
>
>
> > class Bar extends LongKeyedMapper[Bar] with IdPK
> > object fooid extends MappedLongForeignKey(this, Foo)
> > }
>
> > class Baz extends LongKeyedMapper[Baz] with IdPK
> > object barid extends MappedLongForeignKey(this, Bar)
> > }
>
> > How do I write Baz.findAll(...) so it will give me all the Bazes that
> > point to any Bars that point to the Foo. In SQL I would write
> > something like this:
>
> > SELECT * FROM bazzes WHERE bazzes.barid = bars.id AND bars.fooid =
> > 111; (where 111 is foo.id)
>
> > I feel like I should be using ByRef here? But it's not clear to me
> > how to do it.
>
> > -harryh
>
> --
> 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
--~--~---------~--~----~------------~-------~--~----~
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
-~----------~----~----~----~------~----~------~--~---
