Payment module in Magento 2

Modern online payment systems like Paypal are looking for ways to integrate with possible trading platforms, CMS (Content Management Systems), search engines to ensure the greatest reach. Plugins are created for such solutions. Thus, if a company wants to create its own payment system, it needs to do the same. Depending on the focus of the services, a lot of effort, knowledge and skills may be required. In order to better explain the essence of the matter, in this article we will show you how to create a Magento 2 payment module using one of our latest cases as an example.
Case descriptionAn international provider of payment solutions and services for e-commerce companies commissioned us to develop extensions in the form of payment modules for several CMS. Among them were Shopify, PrestaShop, Open Cart, OXID, and more – with some non-standard features. So, first we set up Magento to create our payment module.


Create Magento 2 Payment ModuleWhy did we start with Magento?Magento is the most popular e-commerce platform today, accounting for the lion”s share of total online product sales. Thanks to its powerful extensible architecture, it is recognized as one of the most useful and user-friendly CMS for building online stores.
When you create a custom payment module in Magento 2, you can define the fields that the user will interact with during checkout and the API (Application Programming Interface) logic used to implement the payment method. It also allowed for the creation of a complex database that could be safely used for further development.
How Magento is useful for your businessThe platform supports a wide range of ready-made payment methods, has integration with various payment portals and systems. These connections allow you to create and process transactions based on order details. However, if you need more than a set of standard features, you can create a payment module in Magento and easily integrate your online store with almost any third-party solution.
Thanks to the Magento web interface, you can create an online store with advanced payment methods and cooperate with various financial service providers through plugins. In turn, the payment systems and the platform itself ensure the security and compliance of such interactions with the PCI (payment card industry). You don”t have to worry about keeping credit card information confidential or PCI compliance.
How to Create a Magento 2 Payment Module: Basic Process TipsWhen planning to create a module for a custom payment method in Magento 2, it is important to determine which payment systems to use and how many payment methods to offer customers. All API keys, private keys, and API signatures must be provided to the development team for your online store to fully function from launch.If your store needs to support multiple currencies, the created module can be equipped with an exchange function. Thanks to this, visitors will be able to choose the most convenient payment method. The team can create custom payment modules according to current business goals, including popular items such as discounts.

So, in order to allow Magento 2 to create your own payment module, you need to start with the key aspects that need to be determined before hosting a payment system:

select the required configuration and functions (“payment.xml” file in the “/ etc / payment” folder);configure basic parameters and server model (“Model / Payment / Simple.php”);implement the changes in the interface necessary to display the payment method for the client (“/view/frontend/layout/checkout_index_index.xml”, “/view/frontend/web/js/view/payment/simple.js” and “method-renderer / simple-method.js “);implement a payment processing model (“/view/frontend/web/template/payment/simple.html”).Then, to allow Magento 2 to create a payment module, you need to modify the files and update the Configs cache to see the changes. 

Some experts recommend disabling this type of cache, but this approach has a noticeable drawback – it slows down the application.
When you try to let Magento create your own payment system module, you need to change several layouts and templates, so remember to disable the layout and HTML rendering modules, page caching, and then re-enable them when you are done.
The payment method visualization should be implemented as a user interface component. For the sake of compatibility, upgradeability and ease of maintenance, do not edit the default Magento code and add your settings in a separate module.

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