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Re: Core Data Problem
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Re: Core Data Problem


  • Subject: Re: Core Data Problem
  • From: Matthew Firlik <email@hidden>
  • Date: Thu, 9 Feb 2006 01:56:04 -0800


On Feb 8, 2006, at 7:51 PM, Sean Willson wrote:

I'm running into a problem I was wondering if people have seen or could help
with. I have core data document based application that I am unable to save.
When I try to save the document I get:


--
Exception raised during posting of notification. Ignored. exception:
Cannot perform operation since entity with name '(null)' cannot be found
--


printed into the console. I have turned off all object creation in my
context. All that is remaining now is 2 nibs are loaded that have
NSArrayController and NSObjectControllers in them. I don't have anything at
all in the app, but yet the error persists.


Are there any easy ways to track this down? Seems like I should be able to
enable some debug level or set a breakpoint in a dummy subclass to find this
but it's alluding me. Any comments or suggestions would be greatly
appreciated.

This error is emitted by an NSObjectController set in Entity mode as it attempts to access the NSEntityDescription in the NSManagedObjectModel associated with the object class name as specified in the inspector in IB. (That's a mouthful: in short, you have a controller in entity mode with a nil object class name.)


Select each of your controllers in IB, and hit Command-1 to bring up the inspector. In the "Object Class Name" field at the top, ensure you have a valid entity name.

- matthew



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