AddressBookCheckoutComponent::getFormFields PHP Метод

    public function getFormFields(Order $order)
    {
        $fields = parent::getFormFields($order);
        if ($existingaddressfields = $this->getExistingAddressFields()) {
            Requirements::javascript(THIRDPARTY_DIR . '/jquery/jquery.min.js');
            Requirements::javascript(SHOP_DIR . '/javascript/CheckoutPage.js');
            // add the fields for a new address after the dropdown field
            $existingaddressfields->merge($fields);
            // group under a composite field (invisible by default) so we
            // easily know which fields to show/hide
            $label = _t("Address.{$this->addresstype}Address", "{$this->addresstype} Address");
            return FieldList::create(CompositeField::create($existingaddressfields)->addExtraClass('hasExistingValues')->setLegend($label)->setTag(Config::inst()->get('AddressBookCheckoutComponent', 'composite_field_tag')));
        }
        return $fields;
    }