public function __construct(Am_Request $request, Am_View $view)
 {
     parent::__construct($request, $view);
     $this->user_id = $this->getCompleteRequest()->get('user_id', 0);
     if ($this->user_id) {
         $this->getDataSource()->getDataSourceQuery()->addWhere('t.user_id=?d', $this->user_id);
     }
 }