Juha,
Yep... Lift doesn't do a lot of automagic stuff with One to Many relations.
Maybe we'll look into doing more with this once we move to the Record/Field
code.
Thanks,
David
On Sun, Nov 23, 2008 at 1:47 PM, Juha L <[EMAIL PROTECTED]> wrote:
>
> Hi,
>
> I'm trying to learn some Scala and Lift, and I'm currently playing
> with the Lift mapper. I have however stumbled upon a problem for which
> I don't seem to be able to find answer from the examples or by using
> Google. How do you create one-to-many mapping with lift mapper?
>
> I have something like
>
> class Parent extends KeyedMapper[Long, Parent] {
> def getSingleton = Parent
> def primaryKeyField = id
>
> object id extends MappedLongIndex(this)
> }
>
> class Child extends KeyedMapper[Long, Child] {
> def getSingleton = Child
> def primaryKeyField = id
>
> object id extends MappedLongIndex(this)
>
> object parent extends MappedLongForeignKey(this, Parent)
> }
>
> What do I need to do so that I could do something like
>
> parent.children.map(...)
>
> Only way I have figured out is to create function like one below in
> the Parent class. That will only solve problem of finding and updating
> them, not adding, deleting or so.
>
> def children = Child.findAll(By(Child.parent, this.id))
>
> There probably is a correct way to do this, but at least I couldn't
> find it. Any help appreciated.
>
> Thanks beforehand,
> Juha
>
> >
>
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