I'm attempting to use NSManagedObject validateForDelete in order to provide timely feedback to delete actions by users. But the relationship delete rules don't seem to be getting applied as I would expect.
-validateForDelete: is intended as a potential delegate hook for subclasses of NSManagedObject. It's designed to be called from within -save: to perform any customized validation you might need on deleted objects.
It's not intended to double as -canDelete or -isDeleteable. It will produce something vaguely to that effect if you call - processPendingChanges first, although that's not its purpose.
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