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Blank Module Structure

Creating a new composer-installed Magento 2 module

Files in the module

Folder structure

Repo root
├── etc
│   └── module.xml
├── composer.json
└── registration.php

etc/module.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../lib/internal/Magento/Framework/Module/etc/module.xsd">
    <module name="VendorName_ModuleName" setup_version="0.0.1"/>
</config>

composer.json

This file is mostly autogenerated by composer init, but you'll need to add the autoload node yourself so Magento knows what to do with it.

{
    "name": "vendorname/modulename",
    "description": "A module to do things",
    "authors": [
        {
            "name": "Your Name Here",
            "email": "you@domain.co.uk"
        }
    ],
    "require": {},
    "autoload": { // Needed for Magento autoloading from vendor/
        "files": [
            "registration.php"
        ],
        "psr-4": {
            "VendorName\\ModuleName\\": ""
        }
    }
}

registration.php

<?php

\Magento\Framework\Component\ComponentRegistrar::register(
    \Magento\Framework\Component\ComponentRegistrar::MODULE,
    'VendorName_ModuleName',
    __DIR__
);

Installing the Module into Magento 2

Adding a git repository to composer

Note this step isn't needed for packages on Packagist.

{
    ...
    repositories {
        ...
        "ec-modulename": {
            "type": "git",
            "url": "user@host:/path/to/git/repo"
        }
        ...
    }
    ...
}

Installing the module

composer require "vendorname/modulename": "dev-master"

The package is then installed in Magento at vendor/{vendorname}/{modulename}

Adding a new Route

Configuring a new route

{module_root}/etc/frontend/routes.xml:

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:App/etc/routes.xsd">
    <router id="standard">
        <route id="routename" frontName="routename">
            <module name="VendorName_ModuleName" />
        </route>
    </router>
</config>

Create the controller

{module_root}/Controller/Index/Index.php

<?php

namespace VendorName\ModuleName\Controller\Index;

use Magento\Framework\App\Action\Action;
use Magento\Framework\Controller\ResultFactory;

class Index extends Action
{
    public function execute()
    {
        $page = $this->resultFactory->create(ResultFactory::TYPE_PAGE);
        return $page;
    }
}