On 2009 Dec 12, at 08:34, Ben Packard wrote: > NSManagedObject *player = [NSEntityDescription > insertNewObjectForEntityForName:@"Player" inManagedObjectContext:[self > managedObjectContext]];
The above is good. > But what I want to do is use a tournament builder class from the original > project that takes in a filepath and returns a Tournament, complete with all > it's players, tables etc. This function works well in the original project > but when I try to use it in the core data project I get: > > Failed to call designated initializer on NSManagedObject class 'Tournament' From NSManagedObject documentation, "If you instantiate a managed object directly, you must call the designated initializer (initWithEntity:insertIntoManagedObjectContext:)." Or, -[NSEntityDescription insertNewObjectForEntityForName:inManagedObjectContext:], as you've used above, should do the same thing. Some subtleties are explained in its documentation. > How am I meant to load into core data a whole graph of objects (tournament > and its constituent parts) that are returned from a function, One at a time. Just like you did with Players. Do the same with all the Tables, all the Tournaments, etc. You need to convert all these regular objects into managed objects. > and where should I be putting the code? wherever it feels good, probably after you read the file. As long as it's running on the main thread. _______________________________________________ Cocoa-dev mailing list ([email protected]) 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]
