'valueForUndefinedKey' when the 'key' accessor already exists (part deux)
'valueForUndefinedKey' when the 'key' accessor already exists (part deux)
- Subject: 'valueForUndefinedKey' when the 'key' accessor already exists (part deux)
- From: "Frederick C. Lee" <email@hidden>
- Date: Thu, 6 Apr 2006 12:26:09 -0700
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':
===============
#1) revised:
- (void)loadMapCoordinates:(NSNotification *) notice {
NSLog(@"{EWAppDelegate.m: loadMapCoordinates}");
@try {
[ewBrowserMCController addObject:[self newMapCoordinates:
[notice userInfo]]];
}
@catch (NSException *e) {
NSLog(@"{EWAppDelegate.m: loadMapCoordinates} %@",e);
}
[self activateMapCoordSheet:nil];
}
//
------------------------------------------------------------------------
------------------------------------------------------------------------
---
#2) Originally via MOC:
- (void)loadMapCoordinates:(NSNotification *) notice {
NSLog(@"{EWAppDelegate.m: loadMapCoordinates}");
@try {
MapManagedObject *currentMap = [[ewBrowserMapArrayController
selectedObjects] objectAtIndex:0];
NSManagedObject *newCoords = [[self newMapCoordinates:
[notice userInfo]] retain];
// Attaching the MapCoord link to parent 'Map':
NSMutableSet *MapCoordSet = [currentMap
mutableSetValueForKey:@"mapcoordinates"];
[MapCoordSet addObject:newCoords];
[newCoords release];
}
@catch (NSException *e) {
NSLog(@"{EWAppDelegate.m: loadMapCoordinates} %@",e);
}
[self activateMapCoordSheet:nil];
}
===============
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.
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