/**
  * Only validate the zip / postal code for countries
  * that have a defined postcode pattern matching rule
  * in the db
  * @param $attribute The attribute name.
  * @param $params Additional parameters defined in the rules.
  * @return void
  */
 public function validatePostal($attribute, $params)
 {
     $validate = false;
     $objCountries = Country::model()->withpostal()->findAll();
     if ($attribute == 'shippingPostal') {
         $country = $this->shippingCountry;
     }
     if ($attribute == 'billingPostal') {
         $country = $this->billingCountry;
     }
     if (empty($country)) {
         return;
     }
     foreach ($objCountries as $objCountry) {
         if ($country === $objCountry->id) {
             $validate = true;
             break;
         }
     }
     if ($validate === true) {
         parent::validatePostal($attribute, $params);
     }
     return;
 }