If the second entity is instantiated whenever the first is, then you can just add code to create the second entity (NSEntityDescription insertNewObjectForEntityForName:inManagedObjectContext:) inside the awakeFromInsert method of the first object. Thus, you only have to explicitly create the first entity.

Dave

On Aug 24, 2008, at 6:17 AM, Steven Hamilton wrote:

Hi folks,
I have a Core Data model which contains two entities. I have a tableview with the standard bindings arrangement and Add/Remove buttons handling one of the entities. What I need to achieve is that when the Add button is pressed both entity types are created, not just the one thats displayed in the table. I notice I can't use the button to send two Add: actions so I can't do one automatically, and the other in a custom class.

What's the best way to handle this situation? My first thought is ditching the bindings and implementing the table datasource methods. My next was perhaps subclassing the array controller.


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