Re: refreshing core data controller
Re: refreshing core data controller
- Subject: Re: refreshing core data controller
- From: Pavel Hlavnicka <email@hidden>
- Date: Thu, 31 May 2007 10:50:03 +0200
Thanks,
using fetch methods is what I usually do. In this case I want to use
the controller because I want to set the UI as it was before managed
context reset.
It means: I have a table with a couple of items and selection index is
say 2. After reset selection index is always 0. I need to find the
relevant item (by walking trough array controller) and set selection
index to index of the item selected recently.
Perhaps I need just to postpone this action using -[NSRunLoop
performSelector:] or similar...
Any other tips for some solution workaround?
Thanks
Pavel
Chris Hanson wrote:
On May 30, 2007, at 7:43 AM, Pavel Hlavnicka wrote:
My UI is refreshed fine but I'm having problems to access values via
-[NSArrayController arrangedObject] right after I call reset on the
managed context - arrangedObjects returns just an empty array.
It sounds like you're trying to treat your NSArrayController as part of
your model. You should use Core Data directly -- execute fetch requests
against your managed object context and so on -- from within model
code. NSObjectController and its subclasses are intended to mediate
between your model and your view layers, not to provide a way to
manipulate your model directly.
-- Chris
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