Get users

gistfile1.m

    PFQuery *getUsers = [PFQuery queryWithClassName:@"cardLocation"];
    // Interested in locations near user.
    [getUsers whereKey:@"location" nearGeoPoint:point withinMiles:10];
    [getUsers findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
        if (!error) {
            resultSet = [[NSMutableArray alloc]initWithCapacity:1];
            NSLog(@"Successfully retrieved %d record.", objects.count);
            for (PFObject *card in objects) {
                NSTimeInterval timeSinceLastUpdate = [card.updatedAt timeIntervalSinceNow];
                //only display users if they've checked in less than 30 minutes ago
                if (timeSinceLastUpdate > -1800) {
                    [card objectForKey:@"card" inBackgroundWithBlock:^(id object, NSError *error) {
                        if (!error) {
                            PFObject *cards = object;
                            [cards objectForKey:@"cardOwner" inBackgroundWithBlock:^(id object, NSError *error) {
                                if (!error) {
                                    PFObject *cardOwner = object;
                                    [cardOwner objectForKey:@"username" inBackgroundWithBlock:^(id object, NSError *error) {
                                        if (!error) {
                                            PFObject *userID = object;
                                            NSString *currentUserNameString = [NSString stringWithFormat:@"%@", [currentUser objectForKey:@"username"]];
                                            NSString *fetchedUserNameString = [NSString stringWithFormat:@"%@", userID];
                                            if (cards != nil) {
                                                //only get cards if they are currently set to broadcasting
                                                [cards objectForKey:@"active" inBackgroundWithBlock:^ (id object, NSError *error) {
                                                    if (!error) {
                                                        NSString *activeStatus = [NSString stringWithFormat:@"%@", object];
                                                        if ([activeStatus isEqualToString:@"1"]) {
                                                            [cards objectForKey:@"broadcasting" inBackgroundWithBlock:^(id object, NSError *error) {
                                                                if (!error) {
                                                                    NSString *broadcastingStatus = [NSString stringWithFormat:@"%@", object];
                                                                    if ([broadcastingStatus isEqualToString:@"1"]) {
                                                                        if (![currentUserNameString isEqualToString:fetchedUserNameString]) {                                                            
                                                                            [resultSet addObject:cards];
                                                                            [self setContentsList:resultSet];
                                                                            [resultTableView reloadData];
                                                                        }
                                                                    }
                                                                } 
                                                            }];
                                                        }
                                                    }
                  
                                                }];
                                            }
                                        }
                                    }];
                                }
                            }];
                        } 
                    }];
                }
            }
        }
        else {
            
        }
    }];