Creating modules

Getting Started - Background & Prerequisites

Drupal leverages advanced PHP language features & sophisticated 3rd party libraries for better developer experience

Naming and placing your Drupal module

Main topic described: module naming and location

Let Drupal know about your module with an .info.yml file

Main topic described: project metadata

Include default configuration in your Drupal module

Main topic described: default configuration

Defining and using your own configuration in Drupal

Main topic described: defining own configuration

Create a custom page using a controller

Create a simple page in Drupal by declaring the path and options and writing a callback that returns the page body.

Creating custom blocks

Unlike in Drupal 7, creating multiple instances of a block to place on your site is an easy task in Drupal 8.

• Create a custom block plugin
• Add a Form to the Block Configuration
• Process the Block Config Form
• Use Config in Block Display

Creating custom field types, widgets, and formatters

Create a custom field type, widget, and formatter in Drupal 8.

• Overview: Creating a custom field
• Field types, widgets, and formatters are plugins
• Create a custom field type
• Create a custom field widget
• Create a custom field formatter

Subscribe to and dispatch events

Get to know Symfony events in Drupal and find out how they relate to Drupal hooks.

Building a Views display style plugin for Drupal

Here's a step by step guide on how to create a Views display style plugin.

Adding assets (CSS, JS) to a Drupal module via *.libraries.yml

This documentation is for modules. For the themes, see Adding stylesheets (CSS) and JavaScript (JS) to a Drupal theme.

Basic module building tutorial: Lorem ipsum generator

Step-by-step guide for module building beginners. 

• Tutorial introduction
• Basic structure
• Settings
• Defining a block
• Theming
• Testing a Drupal module

Step by step tutorial: Hello World

A step-by-step tutorial for building a module

• Tutorial introduction
• Prepare a Module skeleton
• Add a routing file
• Adding a basic controller
• Add a menu link
• Add a Default Configuration
• Going further

Understanding hooks

Hooks are one of the ways how that modules can interact with the other modules or Drupal core subsystems.