Re: Undo and NSArrayController and CoreData
Re: Undo and NSArrayController and CoreData
- Subject: Re: Undo and NSArrayController and CoreData
- From: Miguel Sanchez <email@hidden>
- Date: Thu, 9 Mar 2006 11:32:14 -0800
can you tell us a little more about how it is that you're updating
your model? Are you using a proper accessor method (with the will/did
calls)? are you removing things from the detail relationship that is
represented in the array controller?
your first focus should be not in trying to force the array
controller to update, but in seeing if you are changing your model
through the official channels so that Key Value Observing can
initiatethe correct updates.
- Miguel
On Mar 9, 2006, at 12:49 AM, Jason Swain wrote:
I have a NSArrayController that is bound to the selection of another
NSArrayController (don't think this is significant, but just in
case). All works fine for user interaction, but when Undo is used,
i.e. the Managed Object Model is changed underneath the
NSArrayController it does not update correctly.
I have some debug code that gives me a count of the objects in the
array, both through the NSArrayController and directly from the
CoreData objects. The direct count is correct, and NSArrayController
still has the old array of objects (before the undo). So how do I
get the NSArrayController to update? I thought that this would
happen automatically through the binding, but it does not. I've
tried using any methods that looked remotely like they would cause
the array controller to reread it's data (-fetch etc), but this does
not help.
Jason
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