public function updateLU()
 {
     try {
         $model = new LU($this->data->lu->idLU);
         $model->setData($this->data->lu);
         $model->save();
         $this->renderPrompt('information', 'OK');
     } catch (\Exception $e) {
         $this->renderPrompt('error', $e->getMessage());
     }
 }