Re: managedObjectContext hasChanges
Re: managedObjectContext hasChanges
- Subject: Re: managedObjectContext hasChanges
- From: mmalc crawford <email@hidden>
- Date: Wed, 4 Oct 2006 14:55:59 -0700
On Oct 4, 2006, at 1:37 PM, Mu Lin wrote:
> In a Core Data application, I've got the Save menu item bound to
> the saveAction: of my application delegate which works. I'd like to
> have the menu disabled, however, until a change has been made. Is
> there any way to bind the enabled binding of the menu item to the
> context or model to do this, or do I have to write code to handle
> this?
Assuming that you're using the default configuration for a Cocoa Core
Data Application, you can bind enabled to [App
Delegate].managedObjectContext.hasChanges
I found that the bind to the key "hasChanges" of
managedObjectContext doesn't work.
A trivial test with a new project shows this does work.
Are you using the default configuration for a *Cocoa Core Data
Application* (i.e. not a document-based application)?
Is the application delegate set correctly?
Have you changed the way the managed object context is set up/created?
mmalc
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