public function view($id = null)
 {
     $view = new XView(Users_View);
     $view->title = 'Users';
     $view->users = ProfileModel::getUserList();
     $this->__common($view);
 }
 public function index($receiver_id = NULL)
 {
     $view = new XView(Message_View);
     $view->receiver_id = $receiver_id;
     $view->title = 'Messages';
     session_start();
     $view->isLoggedIn = Authentification::isLoggedIn();
     if ($_POST['post_message']) {
         MessageModel::newMessage($_POST['content'], $_SESSION['id'], $receiver_id);
     }
     if ($receiver_id != null) {
         $view->messages = MessageModel::getMessageListByAuthorToSender($_SESSION['id'], $receiver_id);
     } else {
         $view->messages = array();
     }
     $view->users = ProfileModel::getUserList();
     $this->__common($view);
 }