/**
  * 判斷是否已讀
  * @param string $current_id 目前公告的ID
  * @return 讀取狀態
  */
 private function isRead($current_id)
 {
     $isEmpty = TbaBoardEmpLog::model()->findByAttributes(array('board_id' => $current_id, 'empno' => Yii::app()->user->id));
     if ($isEmpty == null) {
         return false;
     } else {
         return true;
     }
 }
 /**
  * Returns the data model based on the primary key given in the GET variable.
  * If the data model is not found, an HTTP exception will be raised.
  * @param integer $id the ID of the model to be loaded
  * @return TbaBoardEmpLog the loaded model
  * @throws CHttpException
  */
 public function loadModel($id)
 {
     $model = TbaBoardEmpLog::model()->findByPk($id);
     if ($model === null) {
         throw new CHttpException(404, 'The requested page does not exist.');
     }
     return $model;
 }