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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