/**
  * Manages all models.
  */
 public function actionAdmin()
 {
     $lang = $this->getLanguageCode();
     $model = new Category();
     $listCate = $model->getListCategory($lang);
     $model->unsetAttributes();
     $tree = Yii::app()->extraFunctions->parseTree($listCate);
     $this->render('admin', array('tree' => json_encode($tree)));
 }