/**
  * After saving this configuration item, perform any updates.
  *
  * @return void
  */
 public function postConfigurationChange()
 {
     Yii::app()->params[$this->key_name] = $this->key_value;
     switch ($this->key_name) {
         case 'STORE_OFFLINE':
             if ($this->key_value == 1) {
                 $this->key_value = rand(2, 99999999);
                 $this->save();
                 Yii::app()->user->setFlash('warning', Yii::t('global', 'Your store is currently set offline for maintenance -- you can access it via the url {url}', array('{url}' => Yii::app()->createAbsoluteUrl('site/index', array('offline' => $this->key_value)))));
             } else {
                 Yii::app()->user->getFlash('warning');
             }
             Yii::app()->params[$this->key_name] = $this->key_value;
             break;
         case 'INVENTORY_OUT_ALLOW_ADD':
             Category::updateAllChildCounts();
             Family::updateAllChildCounts();
             break;
     }
 }