title: Fetch objectId from a User in parse
body: <p>i'm new to parse and i'm trying to fetch a user objectId, but whatever i cant seem to return the objectId. I can easily return the username. this is my query:</p>
  
  <pre><code>                 PFQuery *query = [PFUser query];
                   [query whereKey:@"username" equalTo:[[PFUser currentUser] objectForKey:@"username"]];
                   [query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
                       if (!error) {
                           if (objects.count) {
                               NSLog(@"%@", [objects lastObject]);
  
                           }
                  }
              }];
  </code></pre>
  
  <p>This returns something like this:</p>
  
  <pre><code>&lt;PFUser:9dcc65tsdr:(null)&gt; {
      username = AEleQFdBx9jdtypfsQmLtzAvW;
  }
  </code></pre>
  
  <p>How do i return the objectId which is between PFUser and (null)?</p>