posts_controller.php.diff

diff --git a/workshop/controllers/posts_controller.php b/workshop/controllers/posts_controller.php
index 35c892c..d2324d4 100644
--- a/workshop/controllers/posts_controller.php
+++ b/workshop/controllers/posts_controller.php
@@ -28,7 +28,7 @@ class PostsController extends AppController {
 			}
 		}
 		$tags = $this->Post->Tag->find('list');
-		$users = $this->Post->User->find('list');
+		$users = $this->Post->User->find('list', array('fields' => array('id', 'username')));
 		$this->set(compact('tags', 'users'));
 	}
 
@@ -49,7 +49,7 @@ class PostsController extends AppController {
 			$this->data = $this->Post->read(null, $id);
 		}
 		$tags = $this->Post->Tag->find('list');
-		$users = $this->Post->User->find('list');
+		$users = $this->Post->User->find('list', array('fields' => array('id', 'username')));
 		$this->set(compact('tags','users'));
 	}