Re: CoreData & NSTreeController question
Re: CoreData & NSTreeController question
- Subject: Re: CoreData & NSTreeController question
- From: Jim Correia <email@hidden>
- Date: Fri, 13 May 2005 15:34:48 -0400
On May 13, 2005, at 3:27 PM, T Reaves wrote:
The issue I have is that because the outline is bound to a
controller of a particular type, when an instanec is added as a
child of another instance, the new object appears twice in the
outline; once as the child element of the instance added to, and
once as a top level object itself. What I want to do is limit it
to only being displayed once - at the level it was added at.
Would I use a predicate set in IB on the NSTreeController for
this?
Yes. Look at
/Developer/Examples/CoreData/OutlineEdit
since it does exactly what you want. The predicate is "parent == nil"
but of course may differ based on your model.
Jim
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