Re: -[_NSControllerObjectProxy entity]: unrecognized selector sent to instance
Re: -[_NSControllerObjectProxy entity]: unrecognized selector sent to instance
- Subject: Re: -[_NSControllerObjectProxy entity]: unrecognized selector sent to instance
- From: Kyle Sluder <email@hidden>
- Date: Wed, 25 Feb 2009 15:05:51 -0500
On Wed, Feb 25, 2009 at 2:43 PM, Daniel Child <email@hidden> wrote:
> The object I'm adding was obtained by using
> NSManagedObject *theWord = [wordList selection]
> This yields a proxy object instead of an MO. (Does anyone know why?)
Read the documentation for -[NSObjectController selection]. It's
right there in black and white: "A proxy object representing the
receiver’s selection. This object is fully key-value coding compliant,
but note that it is a proxy and so does not provide the full range of
functionality that might be available in the source object."
> -[NSManagedObject copyWithZone:]: unrecognized selector sent to instance
> 0x1adf50
Typically this happens when you've bound a view to the selectedObjects
of a controller and not provided a keypath. Often times views copy
their object values, but NSManagedObjectContext does not support
NSCopying. Make sure that all your bindings are to keypaths, not just
to the objects themselves.
--Kyle Sluder
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