'valueForUndefinedKey' when the 'key' accessor already exists ... *SOLVED!*
'valueForUndefinedKey' when the 'key' accessor already exists ... *SOLVED!*
- Subject: 'valueForUndefinedKey' when the 'key' accessor already exists ... *SOLVED!*
- From: "Frederick C. Lee" <email@hidden>
- Date: Fri, 7 Apr 2006 15:02:17 -0700
Scenario:
[Map (MapManagedObject)] ---->> [MapCoordinates (NSManagedObject)].
I finally solved the problem.
It was something that only I could have found: a typo.
I had allocated 'MapManagedObject' {ref: [MapManagedObject alloc]}
for a NSManagedObject by mistake:
- (NSManagedObject *)newMapCoordinates:(NSDictionary *)inData {
NSManagedObject *mcManagedObject =
[[[MapManagedObject alloc] initWithEntity:[[managedObjectModel
entitiesByName] valueForKey: @"MapCoordinates"]
insertIntoManagedObjectContext: managedObjectContext]
autorelease];
....
....
....
return mcManagedObject;
} // end newMapCoordinates().
==========
The correct stmt is:
...
NSManagedObject *mcManagedObject =
[[[NSManagedObject alloc] initWithEntity:[[managedObjectModel
entitiesByName] valueForKey: @"MapCoordinates"]
insertIntoManagedObjectContext: managedObjectContext]
autorelease];
...
==========
What I got for the misery: attempting to encode an entire MO vs a
MO's attribute.
Who could have guess the cause of the run-time error?
I found this typo via rebuilding the project from scratch.
Ric.
Scenario:
Map --->> MapCoordinates
Abstract:
The MapManagedObject can get updated (with images) WITHOUT errors,
IF I DONT
ADD ANY CHILDREN (coordinates). Otherwise, the runtime complains
of a missing
(image) accessor that actually does exist in the MapManagedObject.
If it helps to clarify anything, I re-wrote 'loadMapCoordinates
()' (#1 vis #2) using
the child ewBrowserMCController via 'addObject':
[...]
The outcome is still the same:
I get the following upon SAVE:
{EWAppDelegate.m: loadMapCoordinates}
*** {MapManagedObject.m: valueForUndefinedKey} key = image***
{EWAppDelegate.m:sheetPanelExit} (tag = 700) [<MapManagedObject
0x64b7f0>
setValue:forUndefinedKey:]: this class is not key value coding-
compliant for the key imageData.
===============
Note again: 'image' and 'imageData' have accessors within
MapManagedObject.
So somehow, programmatically adding a child MO instance to the MOC
and populating it, causes the runtime error upon SAVE.
Any clues?
Ric.
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Cocoa-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden