public function actionDiscount($id)
 {
     $customer = $this->loadModel($id);
     $services = new ServiceDetail('search');
     $services->unsetAttributes();
     // clear any default values
     if (isset($_GET['ServiceDetail'])) {
         $services->attributes = $_GET['ServiceDetail'];
     }
     if (isset($_POST['CustomerDiscount'])) {
         foreach ($_POST['CustomerDiscount'] as $key => $data) {
             if (isset($data['id'])) {
                 $model = CustomerDiscount::model()->findByPk($data['id']);
             } else {
                 $model = new CustomerDiscount();
             }
             $model->setAttributes($data);
             $model->save();
         }
     }
     $this->render('discount', array('services' => $services, 'customer' => $customer));
 }