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Code Recipes

If you want to write custom code to programatically manage payments, you can use these code recipes as a starting point.

Creating a payment gateway

Payment gateways are configuration entities that store the configuration for payment gateway plugins. The configuration keys will vary based on the payment gateway definition. The Drupal\commerce_payment\Plugin\Commerce\PaymentGatewayBase class defines display_label, mode, and payment_method_types. In this example, we've also added an api_key key.

 * id [String]
 *   Primary key for this payment gateway.
 * label [String]
 *   Label for this payment gateway.
 * weight [Integer]
 *   The payment gateway weight.
 * plugin [String]
 *   Foreign key of the payment gateway plugin to use.
 * configuration [Array]
 *   The plugin configuration.
 * conditions [Array]
 *   The conditions that control gateway availability.
 * conditionOperator [String] - [DEFAULT = AND]
 *   The condition operator.

// Create the payment gateway.
$payment_gateway = \Drupal\commerce_payment\Entity\PaymentGateway::create([
  'id' => 'my_example',
  'label' => "My example payment gateway",
  'weight' => 0,
  'plugin' => 'example_onsite',
  'configuration' => [
    'api_key' => '2342fewfsfs',
    'display_label' => 'Credit card test',
    'mode' => 'test',
    'payment_method_types' => ['credit_card'],
  'conditions' => [
      'plugin' => 'order_total_price',
      'configuration' => [
        'operator' => '<',
        'amount' => [
          'number' => '100.00',
          'currency_code' => 'USD',

In this second example of payment gateway creation, we're separating the payment gateway plugin configuration from the creation of the payment gateway. This alternative approach works just the same but can result in slightly more readable code. Also, there may be times when you only want to update the configuration for an existing payment gateway.

$payment_gateway = \Drupal\commerce_payment\Entity\PaymentGateway::create([
  'id' => 'manual',
  'label' => 'Manual example',
  'plugin' => 'manual',
  'display_label' => 'Cash on delivery',
  'instructions' => [
    'value' => 'Test instructions.',
    'format' => 'plain_text',

Creating a payment method

In this example, we assume that we have that the variable $order is an object of type Drupal\commerce_order\Entity\OrderInterface. In this example, the payment method will expire on Thursday, January 16th, 2020. To create a payment method that does not expire, omit the expires key or set it to 0; its default value is 0.

$payment_method = Drupal\commerce_payment\Entity\PaymentMethod::create([
  'type' => 'credit_card',
  'payment_gateway' => 'example',
  'payment_gateway_mode' => 'test',
  'remote_id' => 'example123abc',
  'reusable' => TRUE,
  'is_default' => TRUE,
  // Thu, 16 Jan 2020.
  'expires' => '1579132800',
  'uid' => $order->getCustomerId(),
  'billing_profile' => $order->getBillingProfile(),

Creating a payment

/** @var \Drupal\commerce_payment\Entity\PaymentGatewayInterface $onsite_gateway */
/** @var \Drupal\commerce_order\Entity\OrderInterface $order */

$payment = Drupal\commerce_payment\Entity\Payment::create([
  'type' => 'payment_default',
  'payment_gateway' => $onsite_gateway->id(),
  'order_id' => $order->id(),
  'amount' => $order->getTotalPrice(),
  'state' => 'completed',

Loading a payment gateway

Load a payment gateway by its id

// Loading is based off of the primary key [String] that was defined when creating it.
$payment_gateway = \Drupal\commerce_payment\Entity\PaymentGateway::load('manual');

Load the default payment gateway for a user

This method is used primarily when adding payment methods from the user pages. Thus, only payment gateways which support storing payment methods are considered.

/** @var \Drupal\commerce_payment\Entity\PaymentGatewayInterface $payment_gateway */
/** @var \Drupal\user\UserInterface $user */
$payment_gateway = \Drupal::entityTypeManager()

Load all eligible payment gateways for an order

/** @var \Drupal\commerce_payment\Entity\PaymentGatewayInterface $payment_gateway */
/** @var \Drupal\commerce_order\Entity\OrderInterface $order */
$payment_gateways = \Drupal::entityTypeManager()

Loading a payment method

Load a payment method by its id

// Loading is based off of the primary key [Integer]
//   1 would be the first one saved, 2 the next, etc.
$payment_method = \Drupal\commerce_payment\Entity\PaymentMethod::load(1);

Load a user's resusable payment methods for the given payment gateway

Only reusable payment methods that have not yet expired are returned. Filtering by country is optional. In this example, only payment methods with billing profiles from the United States or France will be returned.

/** @var \Drupal\commerce_payment\Entity\PaymentGatewayInterface $payment_gateway */
/** @var \Drupal\commerce_payment\Entity\PaymentGatewayInterface $user */
$payment_methods = \Drupal::entityTypeManager()
  ->loadReusable($user, $payment_gateway, ['US', 'FR']);

Loading a payment

Load a payment by its id

// Loading is based off of the primary key [Integer]
//   1 would be the first one saved, 2 the next, etc.
$payment = \Drupal\commerce_payment\Entity\Payment::load(1);

Load a payment by its remote id

/** @var \Drupal\commerce_payment\Entity\PaymentInterface $payment */
$payment = \Drupal::entityTypeManager()

Load all payments for an order

/** @var \Drupal\commerce_order\Entity\OrderInterface $order */
$payments = \Drupal::entityTypeManager()

Setting the payment gateway for an order

/** @var \Drupal\commerce_order\Entity\OrderInterface $order */
/** @var \Drupal\commerce_payment\Entity\PaymentGatewayInterface $example_payment_gateway */
$order->set('payment_gateway', $example_payment_gateway);

Adding a refunded amount to an existing payment

/** @var \Drupal\commerce_payment\Entity\PaymentInterface $payment */
$payment->setRefundedAmount(new Drupal\commerce_price\Price('15', 'USD'));

Filter payment gateways available for an order

The payment module includes a FilterPaymentGatewaysEvent event that can be used whenever filtering available gateways using Conditions is not sufficient. In this example, we use the data field on Order entities to store a list of explicitly excluded payment gateways.

First, use the data field to store a payment gateway to be excluded.

/** @var \Drupal\commerce_order\Entity\OrderInterface $order */
/** @var \Drupal\commerce_payment\Entity\PaymentGatewayInterface $example_payment_gateway */
$order->setData('excluded_gateways', [$example_payment_gateway->id()]);

Next, implement the event subscriber in your custom module.


namespace Drupal\my_custom_module\EventSubscriber;

use Drupal\commerce_payment\Event\FilterPaymentGatewaysEvent;
use Drupal\commerce_payment\Event\PaymentEvents;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;

class FilterPaymentGatewaysSubscriber implements EventSubscriberInterface {

   * {@inheritdoc}
  public static function getSubscribedEvents() {
    return [
      PaymentEvents::FILTER_PAYMENT_GATEWAYS => 'onFilter',

   * Filters out payment gateways listed in an order's data attribute.
   * @param \Drupal\commerce_payment\Event\FilterPaymentGatewaysEvent $event
   *   The event.
  public function onFilter(FilterPaymentGatewaysEvent $event) {
    $payment_gateways = $event->getPaymentGateways();
    $excluded_gateways = $event->getOrder()->getData('excluded_gateways', []);
    foreach ($payment_gateways as $payment_gateway_id => $payment_gateway) {
      if (in_array($payment_gateway->id(), $excluded_gateways)) {


Altering a payment type definition

In this example, we swap out the existing manual workflow for a custom one. The custom workflow should be defined in the mymodule.workflows.yml, where mymodule is the name of your custom module. See commerce_payment.workflows.yml in the Commerce payment module as an example. This approach could be use to, for example, change the labels that are displayed for the payment states.

 * Implements hook_commerce_payment_type_info_alter().
function mymodule_commerce_payment_type_info_alter(array &$info) {
  if (isset($info['payment_manual'])) {
    $info['payment_manual']['workflow'] = 'mymodule_payment_manual';

Altering a payment method type definition

In this example, we swap out the existing class for the Credit card payment method type with a custom one. This approach could be used to customize the implementations of any of the PaymentMethodTypeInterface methods or the buildFieldDefinitions method.

 * Implements hook_commerce_payment_method_type_info_alter().
function mymodule_commerce_payment_method_type_info_alter(array &$info) {
  if (isset($info['credit_card'])) {
    $info['credit_card']['class'] = \Drupal\mymodule\Plugin\Commerce\PaymentMethodType\CreditCard::class;
    $info['credit_card']['provider'] = 'mymodule';

Altering a payment gateway definition

In this example, we alter the Manual payment gateway plugin class as well as its plugin label.

 * Implements hook_commerce_payment_gateway_info_alter().
function mymodule_commerce_payment_gateway_info_alter(array &$info) {
  if (isset($info['manual'])) {
    $info['manual']['class'] = \Drupal\mymodule\Plugin\Commerce\PaymentGateway\Manual::class;
    $info['manual']['provider'] = 'mymodule';
    $info['manual']['label'] = t('Bill me');

Manage credit cards

The Commerce Payment module defines a CreditCardType object and a CreditCard class that provides logic for listing card types and validating card details.

Credit card type properties and getter methods

Property Description
id Credit card type id, a string
label Name of the credit card type
numberPrefixes An array of credit card type number prefixes
numberLengths An array of credit card type number lengths, default is [16]
securityCodeLength The credit card type security code length, an integer
usesLuhn Whether the credit cart type uses Luhn validation
  • public function getId();
  • public function getLabel();
  • public function getNumberPrefixes();
  • public function getNumberLengths();
  • public function getSecurityCodeLength();
  • public function usesLuhn();

Using credit card helper methods

use Drupal\commerce_payment\CreditCard;

/** @var \Drupal\commerce_payment\CreditCardType[] $credit_card_types */
$credit_card_types = CreditCard::getTypes();

/** @var \Drupal\commerce_payment\CreditCardType $credit_card_type */
$credit_card_type = CreditCard::getType('visa');

// Get an array of credit card type labels, keyed by id.
$credit_card_options = CreditCard::getTypeLabels();

// Detect the credit card type based on the number.
/** @var \Drupal\commerce_payment\CreditCardType $credit_card_type */
$credit_card_type = CreditCard::detectType('4111111111111111');

// Validate the given credit card number.
/** @var \Drupal\commerce_payment\CreditCardType $credit_card_type */
$is_valid = CreditCard::validateNumber('4111111111111111', $credit_card_type);

// Validate the given credit card expiration date.
$is_valid = CreditCard::validateExpirationDate(10, 2020);

// Validate the given credit card security code.
/** @var \Drupal\commerce_payment\CreditCardType $credit_card_type */
$is_valid = CreditCard::validateSecurityCode('993', $credit_card_type);