Integrate Direct Debit into checkout

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This document shows how to integrate the Direct Debit payment form and handler into Checkout.

For this purpose, in Yves, add the CheckoutDependencyInjector to the PaymentMethods/Dependency/Injector. This injects the direct debit form and handler into the Checkoutmodule:

Code sample:

<?php

namespace Pyz\Yves\PaymentMethods\Dependency\Injector;

use Spryker\Yves\Kernel\Container;
use Spryker\Yves\Kernel\Dependency\Injector\DependencyInjectorInterface;
use Pyz\Yves\PaymentMethods\Plugin\DirectDebitHandlerPlugin;
use Pyz\Yves\PaymentMethods\Plugin\DirectDebitSubFormPlugin;
use Spryker\Yves\Checkout\CheckoutDependencyProvider;
use Spryker\Yves\StepEngine\Dependency\Plugin\Form\SubFormPluginCollection;
use Spryker\Yves\StepEngine\Dependency\Plugin\Handler\StepHandlerPluginCollection;
use Pyz\Shared\PaymentMethods\PaymentMethodsConstants;

class CheckoutPageDependencyInjector implements DependencyInjectorInterface
{
	/**
	* @param \Spryker\Shared\Kernel\ContainerInterface|\Spryker\Yves\Kernel\Container $container
	*
	* @return \Spryker\Shared\Kernel\ContainerInterface|\Spryker\Yves\Kernel\Container
	*/
	public function inject(Container $container)
	{
		$container = $this->injectPaymentSubForms($container);
		$container = $this->injectPaymentMethodHandler($container);

		return $container;
	}

	/**
	* @param \Spryker\Shared\Kernel\ContainerInterface $container
	*
	* @return \Spryker\Shared\Kernel\ContainerInterface
	*/
	protected function injectPaymentSubForms(Container $container)
	{
		$container->extend(CheckoutDependencyProvider::PAYMENT_SUB_FORMS, function (SubFormPluginCollection $paymentSubForms) {
			$paymentSubForms->add(new DirectDebitSubFormPlugin());

			return $paymentSubForms;
		});

		return $container;
	}

	/**
	* @param \Spryker\Shared\Kernel\ContainerInterface $container
	*
	* @return \Spryker\Shared\Kernel\ContainerInterface
	*/
	protected function injectPaymentMethodHandler(Container $container)
	{
		$container->extend(CheckoutDependencyProvider::PAYMENT_METHOD_HANDLER, function (StepHandlerPluginCollection $paymentMethodHandler) {
			$paymentMethodHandler->add(new DirectDebitHandlerPlugin(), PaymentMethodsConstants::PAYMENT_METHOD_DIRECTDEBIT);

			return $paymentMethodHandler;
		});

		return $container;
	}
}

What’s next?

Create and integrate the Direct Debit payment method in the backend.