protected function findItemPriceTier($profit_margin_id, $price_tier_id)
 {
     $profit_price_tier = ProfitPriceTier::model()->find('profit_margin_id=:profit_margin_id AND price_tier_id=:price_tier_id', array(':profit_margin_id' => (int) $profit_margin_id, ':price_tier_id' => (int) $price_tier_id));
     if (!$profit_price_tier) {
         $profit_price_tier = new ProfitPriceTier();
     }
     return $profit_price_tier;
 }
 /**
  * Updates a particular model.
  * If update is successful, the browser will be redirected to the 'view' page.
  * @param integer $id the ID of the model to be updated
  */
 public function actionUpdate($id)
 {
     $model = $this->loadModel($id);
     $price_tiers = PriceTier::model()->getProfitPriceTierUpdate($id);
     // Uncomment the following line if AJAX validation is needed
     // $this->performAjaxValidation($model);
     if (isset($_POST['ProfitMargin'])) {
         $model->attributes = $_POST['ProfitMargin'];
         $model->modified_by = Yii::app()->session['employeeid'];
         if ($model->validate()) {
             $transaction = Yii::app()->db->beginTransaction();
             try {
                 if ($model->save()) {
                     ProfitPriceTier::model()->saveProfitPriceTier($model->id, $price_tiers);
                     $transaction->commit();
                     Yii::app()->user->setFlash(TbHtml::ALERT_COLOR_SUCCESS, 'Profit Margin : <strong>' . $model->name . '</strong> have been saved successfully!');
                     $this->redirect(array('admin'));
                 }
             } catch (Exception $e) {
                 $transaction->rollback();
                 Yii::app()->user->setFlash(TbHtml::ALERT_COLOR_WARNING, 'Oop something wrong : <strong>' . $e);
             }
         }
     }
     $this->render('update', array('model' => $model, 'price_tiers' => $price_tiers));
 }