public function consultarValoresJSONAction()
 {
     $valorDao = new ValoresDao($this->getDoctrine());
     $valorT = $valorDao->getValores();
     $numfilas = count($valorT);
     $uni = new Valores();
     $i = 0;
     foreach ($valorT as $uni) {
         $rows[$i]['id'] = $uni->getIdvalores();
         $rows[$i]['cell'] = array($uni->getIdvalores(), $uni->getValdescripcion());
         $i++;
     }
     $datos = json_encode($rows);
     $jsonresponse = '{
            "page":"1",
            "total":"1",
            "records":"' . $numfilas . '", 
            "rows":' . $datos . '}';
     $response = new Response($jsonresponse);
     return $response;
 }