AdminUser::model PHP Method

    public static function model($className = __CLASS__)
    {
        return parent::model($className);
    }

 public function actionLogout()
 {
     alog(at("User logged out."));
     AdminUser::model()->deleteAll('userid=:id', array(':id' => Yii::app()->user->id));
     Yii::app()->user->logout();
     fok(at('Thank You! You are now logged out.'));
     $this->redirect(array('/login'));
 }