Create Custom Module in Magento 2

Creating a custom module in Magento 2 involves several structured steps to ensure that the module is properly defined, registered, and activated.

In Magento 2 modules are a standalone unit where we write our functionalities or business logic to achieve our goal.

It is a group of directories that contain the blocks, controllers, helpers, and models needed to create a specific store feature. It is the unit of customization in the Magento 2 platform.

You can create Magento 2 modules to perform various functions, such as influencing user experience and changing the storefront appearance. They can install, deleted, or disabled.

Here’s a detailed guide on how to create a simple custom module.

Steps to Create a Module :

Create the module folder.
Create the registration.php file.
Create the module.xml file.
Run the command: php bin/magento setup:upgrade
Run the command: php bin/magento setup:di:compile

Create the module Folder :

To create the module we have to create a vendor folder first with the vendor name (which is Webkul in our case) under the app/code folder.

Note – (if the code folder is not available then please create it).

Then we have to create the module folder “BlogManager” (the module name).

Now our folder structure should be like (app/code/Webkul/BlogManager). Where Webkul is our Vendor name and BlogManager is our Module name.

Create the registration.php file :

After this, we have to create a registration.php file under the file path (app/code/Webkul/BlogManager) so that Magento 2 can recognize it as a module and register it.

Code for app/code/Webkul/BlogManager/registration.php file

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

Create the module.xml file. :

To create the module.xml file, we first need to create an etc folder under the directory (app/code/Webkul/Blogmanager), and in the etc folder we need to create a module.xml file with the following content.

Code for etc/module.xml file

<?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="Webkul_BlogManager">
    </module>
</config>

Run the command: php bin/magento setup:upgrade

After creating these two files we need to run the setup upgrade command like below in the terminal at the Magento 2 root folder. It will activate the module.