[solved] Outline view bound to an NSTreeController's content shows all children at the top level
[solved] Outline view bound to an NSTreeController's content shows all children at the top level
- Subject: [solved] Outline view bound to an NSTreeController's content shows all children at the top level
- From: Daniel DeCovnick <email@hidden>
- Date: Thu, 23 Jul 2009 17:36:28 -0700
FTA:
Adding parent == nil to the fetch predicate in IB solves this problem.
Replace parent with your relationship name.
-Daniel
On Jul 23, 2009, at 3:32 AM, Daniel DeCovnick wrote:
Hi all,
Subject is pretty self-explanatory. The problem: I don't want that
behavior.
A little longer explanation: The data is a CoreData entity with a
self-referencing children-parent many-to-one relationship, which can
go arbitrarily deep. The problem is, when call addChild: or
insertChild: instead of only appearing one level down, the new
instance appears at the top level as well. Likewise, if I make a
child from a node on THAT level, the child appears 3 times, once
where it's supposed to be, once in the top level, and once one level
below its parent's instance at the top level.
I get the feeling there's a simple fix for this, but I can't figure
out what it is. If it's relevant, I'm not calling add/insertChild:
(is there a difference, BTW?) in code, but rather hooking up a
button to the treecontroller directly in IB.
Thanks,
Dan
Daniel DeCovnick
danhd123 at mac dot com
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