Re: Equivalent of NSManagedObjectContextWillSaveNotification in 10.5?
Re: Equivalent of NSManagedObjectContextWillSaveNotification in 10.5?
- Subject: Re: Equivalent of NSManagedObjectContextWillSaveNotification in 10.5?
- From: Gideon King <email@hidden>
- Date: Thu, 29 Jul 2010 13:07:52 +1000
Thanks Jerry, it is part of an NSPersistentDocument subclass. I get a bit confused about which save method(s) I would have to implement in my subclass, as there seem to be a number of save... methods and a number of writeTo... methods. The potential candidates seem to be:
saveDocument:
saveDocumentWithDelegate:didSaveSelector:contextInfo:
saveToURL:ofType:forSaveOperation:delegate:didSaveSelector:contextInfo:
saveToURL:ofType:forSaveOperation:error:
writeSafelyToURL:ofType:forSaveOperation:error:
writeToURL:ofType:forSaveOperation:originalContentsURL:error:
writeToURL:ofType:error:
From my reading of the documentation, the first place in the chain that you are absolutely sure that the user is going to save, and not back out of a save panel or something would be saveToURL:ofType:forSaveOperation:delegate:didSaveSelector:contextInfo: so I guess it would be fine for me to override that, send my notification, and call super...
On 29/07/2010, at 12:36 PM, Jerry Krinock wrote:
>
> If this is a document's managed object context, there are lots of methods in NSDocument which you can subclass to post a notification. Otherwise, you could wrap -[NSManagedObjectContext save:] in your own -save… method in some other class, say whatever "owns" this managed object context, and use your new -save… method instead.
>
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