Hi all, Let me start off by saying, I am new to cocoa and objective c programming. Any help is greatly appreciated.
The Error: "Unacceptable type of value for to-many relationship: property = "id"; desired type = NSSet; given type = NSCFString; value = 1001." My main goal here is to have core data application that implements an NSBrowser view; this being a hierarchic view of entities which I call categories, such as... Category -> SubCategories -> SubCategories , etc. The sub categories selected should be based on the previous columns selected category, obviously. After googling up a previous post here, I followed along and set up an entity. I have an entity defined, called Category which has: + Attribute: "name" Type: (String) + Relationship: parentID Destination: "Category" + Relationship: id Destination: "Category" To-Many Relationship Inverse: parentID My MainMenu.nib is as follows: + NSTreeController Attributes Mode: Entity Entity Name: "Category" Child Key Path: "id" Binding Parameters managedObjectContext Bind To: MyApplication_AppDelegate Model Key Path: managedObjectContext + NSBrowser Bindings Browser Content content Bind To: NSTreeController Controller Key: arrangedObjects Model Key Path: Leave Blank contentValues Bind To: NSTreeController Controller Key: arrangedObjects Model Key Path: "name" selectionIndexPaths Bind To: NSTreeController Controller Key: selectionIndexPaths Model Key Path: Leave Blank After I do some parsing of XML, I am programmatically creating my category entities and supplying core data with the values for my keys... NSManagedObject *category = [NSEntityDescription insertNewObjectForEntityForName:@"Category" inManagedObjectContext:[self managedObjectContext]]; .. [category setValue:[childNode stringValue] forKey:@"name"]; [category setValue:[childNode stringValue] forKey:@"id"]; [category setValue:[childNode stringValue] forKey:@"parentID"]; I realize that I'm passing a string, but according to the error, it wants an NSSet? How do I fix this? I also read something about subclassing NSCell and adding the following methods: - (id)objectValue - (void)setObjectValue:(id)anObject However, this did not work for me. Regards, Mark. _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]