set card location

gistfile1.m

 for (NSUInteger i = 1; i < myZapCards.count; i++) {
            [cardsToQuery addObject:[myZapCards objectAtIndex:i]];
        }
        
        PFQuery *query = [PFQuery queryWithClassName:@"cardLocation"];
        //[query whereKey:@"card" equalTo:[myZapCards objectAtIndex:zapPageControl.currentPage]];
        [query whereKey:@"card" containedIn:cardsToQuery];
        [query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
            if (!error) {
                // The find succeeded.
                NSLog(@"Successfully retrieved %d record.", objects.count);
                if (objects.count > 0) {
                    for (PFObject *card in objects) {
                        //get the ID for the card object
                        PFObject *objectID = [NSString stringWithFormat:@"%@",[card objectId]];
                        //set the location of the retrived object to the current location
                        PFQuery *updateLocation = [PFQuery queryWithClassName:@"cardLocation"];
                        [updateLocation getObjectInBackgroundWithId:[NSString stringWithFormat:@"%@", objectID] block:^(PFObject *object, NSError *error) {
                            [object setObject:point forKey:@"location"];
                            [object saveInBackground];
                        }];
                    }
                }
                else {
                    for (NSUInteger i = 0; i < cardsToQuery.count; i++) {
                        PFObject *currentLocation = [PFObject objectWithClassName:@"cardLocation"];
                        [currentLocation setObject:[cardsToQuery objectAtIndex:i] forKey:@"card"];
                        [currentLocation setObject:point forKey:@"location"];
                        [currentLocation saveInBackground];
                    }
                }                
            }