private function loadCategory($id, $slug)
 {
     $model = VideoCategory::model()->findByAttributes(array('term_id' => (int) $id, 'slug' => $slug));
     if ($model === null) {
         throw new CHttpException(404, 'The requested page does not exist.');
     }
     return $model;
 }
 public function listVideoCategory()
 {
     return CHtml::listData(VideoCategory::model()->findAll(array('order' => 'name ASC')), 'term_id', 'name');
 }