What does +contextShouldIgnoreUnmodeledPropertyChanges return for your class? I
am wondering if the two are interlinked.
On 21 May 2010, at 13:24, David Hoerl wrote:
> Before doing my latest project, I poured over the "Model Object
> Implementation Guide" and the NSManagedObject Class Reference. Both documents
> state categorically that NSManagedObjects do NOT automatically provide KVO
> notification unless one overrides +(BOOL)automaticallyNotifiesObserversForKey.
>
> So, I dutifully sent willChangeValueForKey and didChangeValueForKey in the
> setter method for my unmodeled property - an action that in the end caused a
> difficult to find KVO related bug. After commenting out these two statements,
> everything started working!
>
> Well, it thus became obviously that KVO was already enabled for this
> non-modeled property, so I added a log message to test this hypothesis:
>
> NSLog(@"AUTO=%d", [Template
> automaticallyNotifiesObserversForKey:@"topDSimObject"]);
>
> Sure enough it prints out AUTO=1! Yikes! How did that happen?
>
>
> Here is my interface:
>
> @interface Template : NSManagedObject
> {
> DSimObject *topDSimObject;
> }
> @property (nonatomic, retain) NSString * name;
> ...
>
> // tried both as a property and not, no change
> //@property (nonatomic, retain) DSimObject* topDSimObject;
>
> - (void)setTopDSimObject:(DSimObject *)object;
> - (DSimObject *)topDSimObject;
>
> @end
>
>
> So, what am I missing?
>
> David
>
>
>
>
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