Magento 2 Developer's Guide

Registering a module

We first start by defining the app/code/Foggyline/Helpdesk/registration.php file with the following content:

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

We then define the app/code/Foggyline/Helpdesk/etc/module.xml file with the following content:

<?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="Foggyline_Helpdesk" setup_version="1.0.0">
        <sequence>
            <module name="Magento_Store"/>
            <module name="Magento_Customer"/>
        </sequence>
    </module>
</config>

Looking at the preceding file, if we strip away the ...