AddressCheckoutComponent::getRequiredFields PHP Метод

    public function getRequiredFields(Order $order)
    {
        return $this->getAddress($order)->getRequiredFields();
    }

 /**
  * @param Order $order
  * @param array $data
  *
  * @throws ValidationException
  */
 public function validateData(Order $order, array $data)
 {
     $result = ValidationResult::create();
     $existingID = !empty($data[$this->addresstype . "AddressID"]) ? (int) $data[$this->addresstype . "AddressID"] : 0;
     if ($existingID) {
         // If existing address selected, check that it exists in $member->AddressBook
         if (!Member::currentUserID() || !Member::currentUser()->AddressBook()->byID($existingID)) {
             $result->error("Invalid address supplied", $this->addresstype . "AddressID");
             throw new ValidationException($result);
         }
     } else {
         // Otherwise, require the normal address fields
         $required = parent::getRequiredFields($order);
         $addressLabels = singleton('Address')->fieldLabels(false);
         foreach ($required as $fieldName) {
             if (empty($data[$fieldName])) {
                 // attempt to get the translated field name
                 $fieldLabel = isset($addressLabels[$fieldName]) ? $addressLabels[$fieldName] : $fieldName;
                 $errorMessage = _t('Form.FIELDISREQUIRED', '{name} is required', array('name' => $fieldLabel));
                 $result->error($errorMessage, $fieldName);
                 throw new ValidationException($result);
             }
         }
     }
 }