How to Rewrite Widget Function with Mixins Magento 2

When it comes to enhancing functionality without disrupting the core code, the ability to Rewrite Widget Function with Mixins Magento 2 offers a robust solution. Mixins allow you to customize widget behavior efficiently, ensuring modular and maintainable code. This approach improves development flexibility while reducing potential conflicts during updates. By leveraging mixins, you can implement advanced features and tailor your Magento 2 store to meet specific business requirements with ease. In this post, we will understand how to use Mixins in Magento 2.

What is Mixin?

Mixins are a language concept that allows a programmer to inject some code into a class

A mixin is a class containing methods that can be used by other classes without a need to inherit from it.

How to Rewrite Widget Function with Mixins Magento 2

If we want to perform an extra action or extend a Javascript functionality without completely overwriting it, in this case, mixin comes into the picture. Let’s start with an example,

var config = {
    config: {
        mixins: {
            'Magento_Catalog/js/catalog-add-to-cart': {
                'Codedecorator_Learn/js/cd-catalog-add-to-cart-mixin': true
            }
        }
    }
};

After creating above file, we need to create cd-catalog-add-to-cart-mixin.js file where we will extend the functionality of the submitForm function.

define([
], function () {
    'use strict';
    return function (widget) {
        $.widget('mage.catalogAddToCart', widget, {
            /**
             * Handler for the form 'submit' event
             *
             * @param {jQuery} form
             */
            submitForm: function (form) {
                this.ajaxSubmit(form); // original code
                this.doSomethingAfterSubmit(); // add every thing you want
            },
            /**
             * Do something
             */
            doSomethingAfterSubmit: function () {
                // Do stuff
            },
        });
        return $.mage.catalogAddToCart;
    }
});

Try to add the product into the cart and see if your change is coming in or not. If not then try to flush the cache or deploy the content.

Using Mixins to Rewrite Widget Function in Magento 2 is a powerful and flexible approach for creating scalable and maintainable customizations. This method not only simplifies the development process but also ensures your store stays compatible with future updates. By following a structured implementation strategy, you can enhance widget functionality without risking core stability. For advanced customizations or support, consult with a professional Magento development team to take your store’s performance to the next level.

Happy Coding Guys 😀