gistfile1.m

- (void)viewWillAppear:(BOOL)animated {
    
    [super viewWillAppear:animated];
    
    BAAClient *client = [BAAClient sharedClient];
    
    if (client.isAuthenticated) {
        
        NSLog(@"Logged in");
        
        [SMPost getObjectsWithCompletion:^(NSArray *objects, NSError *error) {

            _posts = [objects mutableCopy];
            [self.tableView reloadData];

        }];
    
        
    } else {
        
        NSLog(@"need to login/signup");
        SMLoginViewController *loginViewController = [[SMLoginViewController alloc] initWithNibName:@"SMLoginViewController"
                                                                                             bundle:nil];
        [self.navigationController presentViewController:loginViewController
                                                animated:YES
                                              completion:nil];
        
    }
    
}