Jerry Krinock ([EMAIL PROTECTED]) on 2008-10-22 8:31 PM said: >> A basic question: >> I have a Core Data model which has a one-to-many relationship, say >> one Department and several Employees. > >> When an Employee is added using the 'add' button of the standard >> interface, how can I set the relationship to the (one) instance of >> Department? It means you need access to theDepartment from Employee >> - awakeFromInsert. > > >I don't think so. Getting a reference to one of your objects should >be trivial. Note that -[NSManagedObject >insertNewObjectForEntityForName:inManagedObjectContext] returns the >newly-inserted object.
True, but NSArrayController's add: method does not, which I think the OP was referring to. One option is to not use NSArrayController's add: and instead wire your 'add' button to your own action method. In that method, you can call insertNewObjectForEntityForName:inManagedObjectContext: and change the resulting object's relationships. A disadvantage of not using NSArrayController's add: is that the controller's selection will not change to select the newly added object (which is often desirable in your UI). So another option is to subclass NSArrayController and override the newObject method. There you can call super to create the new object and then modify and return the object. You can keep this subclass more generic by making newObject call super, then use a delegate to mutate the new object, then return it. hth, Sean -- "Nothing will benefit human health and increase the chances for survival of life on earth as much as the evolution to a vegetarian diet" - Albert Einstein _______________________________________________ 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]
