NSManagedObject relationship undo

Posted by Reflog on Stack Overflow See other posts from Stack Overflow or by Reflog
Published on 2010-03-17T17:00:03Z Indexed on 2010/03/17 17:01 UTC
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nsmanagedobject

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nsundomanager

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relationship

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many-to-many

I have a NSManagedObject ObjA that has a many-to-many relationship with another NSManagedObject ObjB.

I initialize it with [NSEntityDescription insertNewObjectForEntityForName:@"ObjA" inManagedObjectContext:app.context];

When I perform undo without performing save - the object is not added to the persistent store.
But - when I add an item to the collection inside ObjA and then perform undo - the ObjA is not added, but ObjB is not, it's still lingering in the persisten store for some reason.

Any ideas what am I doing wrong?

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