How to Create Custom Payment Method in Magento 2

In this dev doc article, we will learn how to create Magento 2 Payment Method Development and render it to the checkout page in Magento 2.

There are following files will have to create:-

1 – Create Test/Testpayment/registration.php for register your module.

<?php
\Magento\Framework\Component\ComponentRegistrar::register(
    \Magento\Framework\Component\ComponentRegistrar::MODULE,
    'Test_Testpayment',
    __DIR__
);

2- Create Test/Testpayment/etc/module.xml for define module name.

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
    <module name="Test_Testpayment" setup_version="2.0.0" active="true">
    </module>
</config>

3- Create Test/Testpayment/etc/config.xml for define your payment method.

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../Store/etc/config.xsd">
    <default>
        <payment>
            <testpayment>
                <payment_action>authorize</payment_action><!-- You can use another methor like capture  -->
                <model>Test\Testpayment\Model\PaymentMethod</model>
                <active>1</active>
                <title>Test Payment</title>
                <order_status>pending_payment</order_status><!-- set default order status-->
            </testpayment>
        </payment>
    </default>
</config>

4- Create Test/Testpayment/etc/adminhtml/system.xml for display payment method in backend. In this file mentioned only one field for enable/disable method.You can add field accordingly your need.

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Config:etc/system_file.xsd">
    <system>
        <section id="payment">
                <group id="testpayment" translate="label" sortOrder="2" showInDefault="1" showInWebsite="1" showInStore="1">
                    <label>Test Payment</label>
                    <field id="active" translate="label comment" sortOrder="1" type="select" showInDefault="1" showInWebsite="1" showInStore="0">
                        <label>Enable</label>
                        <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
                    </field>
                </group>
        </section>
    </system>
</config>

5- Create model file to define payment method Test/Testpayment/Model/PaymentMethod.php

<?php

namespace Test\Testpayment\Model;

/**
 * Pay In Store payment method model
 */
class PaymentMethod extends \Magento\Payment\Model\Method\AbstractMethod
{
    /**
     * Payment code
     *
     * @var string
     */
    protected $_code = 'testpayment';

    /**
     * Authorizes specified amount.
     *
     * @param InfoInterface $payment
     * @param float         $amount
     *
     * @return $this
     *
     * @throws LocalizedException
     */
    public function authorize( \Magento\Payment\Model\InfoInterface $payment, $amount ) 
    {
        return $this;
    }
}

6- In this file Test/Testpayment/view/frontend/web/js/view/payment/method-renderer.js register our template or renderer file.

define(
    [
        'uiComponent',
        'Magento_Checkout/js/model/payment/renderer-list'
    ],
    function (
        Component,
        rendererList
    ) {
        'use strict';
        rendererList.push(
            {
                type: 'testpayment',
                component: 'Test_Testpayment/js/view/payment/method-renderer/testpayment'
            }
        );
        return Component.extend({});
    }
);

7- Create Test/Testpayment/view/frontend/web/js/view/payment/method-renderer/testpayment.js

define(
    [
        'Magento_Checkout/js/view/payment/default'
    ],
    function (Component) {
        'use strict';

        return Component.extend({
            defaults: {
                template: 'Test_Testpayment/payment/testpayment'
            }
        });
    }
);

8- Create template file Test/Testpayment/view/frontend/web/template/payment/testpayment.html

<div class="payment-method" data-bind="css: {'_active': (getCode() == isChecked())}">
    <div class="payment-method-title field choice">
        <input type="radio"
               name="payment[method]"
               class="radio"
               data-bind="attr: {'id': getCode()}, value: getCode(), checked: isChecked, click: selectPaymentMethod, visible: isRadioButtonVisible()"/>
        <label data-bind="attr: {'for': getCode()}" class="label"><span data-bind="text: getTitle()"></span></label>
    </div>
    <div class="payment-method-content">
        <div class="actions-toolbar">
            <div class="primary">
                <button class="action primary checkout"
                        type="submit"
                        data-bind="
                        click: placeOrder,
                        attr: {title: $t('Place Order')},
                        css: {disabled: !isPlaceOrderActionAllowed()},
                        enable: (getCode() == isChecked())
                        "
                        disabled>
                    <span data-bind="i18n: 'Place Order'"></span>
                </button>
            </div>
        </div>
    </div>
</div>

9- Create Test/Testpayment/view/frontend/layout/checkout_index_index.xml for define payment method at checkout page.

<?xml version="1.0"?>
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
    <body>
        <referenceBlock name="checkout.root">
            <arguments>
                <argument name="jsLayout" xsi:type="array">
                    <item name="components" xsi:type="array">
                        <item name="checkout" xsi:type="array">
                            <item name="children" xsi:type="array">
                                <item name="steps" xsi:type="array">
                                    <item name="children" xsi:type="array">
                                        <item name="billing-step" xsi:type="array">
                                            <item name="component" xsi:type="string">uiComponent</item>
                                            <item name="children" xsi:type="array">
                                                <item name="payment" xsi:type="array">
                                                    <item name="children" xsi:type="array">
                                                        <item name="renders" xsi:type="array">
                                                            <!-- merge payment method renders here -->
                                                            <item name="children" xsi:type="array">
                                                                <item name="testpayment" xsi:type="array">
                                                                    <item name="component" xsi:type="string">Test_Testpayment/js/view/payment/method-renderer</item>
                                                                    <item name="methods" xsi:type="array">
                                                                        <item name="testpayment" xsi:type="array">
                                                                            <item name="isBillingAddressRequired" xsi:type="boolean">true</item>
                                                                        </item>
                                                                    </item>
                                                                </item>
                                                            </item>
                                                        </item>
                                                    </item>
                                                </item>
                                            </item>
                                        </item>
                                    </item>
                                </item>
                            </item>
                        </item>
                    </item>
                </argument>
            </arguments>
        </referenceBlock>
    </body>
</page>

Now to install this module execute php bin/magento setup:upgrade command in your root.

Now, You can check your custom payment method at checkout page like as below screen-shot.

Thank’s for reading this article on Magento 2 payment method.

Now you will be able to develop customized payment options, from the basic Cash On Delivery method to a more complex and unique, Magento 2 Partial Payment extension.

We hope you have learned something new today. If you have any queries please send us an email at support@webkul.com. You may also check our quality Magento 2 Extensions.