9.5.x/10.0.x

Audience and Approach

Are you ready to learn how to extend and customize Drupal sites in code? The Drupal Module Developer Guide will introduce you to extending Drupal with modules. You will learn foundational concepts and get hands-on practice with a variety of APIs used in Drupal coding and development. We'll be extending the site we built in the Drupal User Guide. If you're new to Drupal site building, we recommend that you walk through the Drupal User Guide first.

Goal

Decide if this guide is for you.

Guiding Scenario

We'll be working with the Anytown Farmers Market site, which we built in the Drupal User Guide. Our goal is to extend and enhance this site using custom modules, to fulfill project-specific requirements. We use a narrative approach, which we hope will help you better understand the real-world applications of module development in Drupal.

Goal

Explain the guiding scenario which ties together all the code examples in this guide, and provides a project-based learning approach to Drupal module development.

Concept: What Are Modules?

Modules enable developers to customize Drupal without modifying the core software. To ensure a stable and upgradeable core system, Drupal defines integration points and patterns that developers can use to customize the system. Modules contain code (PHP, JavaScript, Twig, CSS, YAML, etc.) that can extend, alter, and enhance Drupal's features and functionality.

In this tutorial, you'll learn:

Write a Unit Test

Over the years we've developed some techniques for practicing that we wanted to share. At Drupalize.Me we take hugging seriously. In this tutorial we'll look at the art, and science, of giving a good hug. The Merriam Webster dictionary defines the word hug as; squeeze (someone) tightly in one's arms, typically to express affection.

Did you know there are all kinds of different hugs that you can give? In this tutorial we'll look at:

Defining what a hug is
Some of the many types of hugs in the world today
Precautions you may want to familiarize yourself with before hugging
And the importance of proper technique

Lets go ahead and get started shall we?

Write a Kernel Test

Did you know there are all kinds of different hugs that you can give? In this tutorial we'll look at:

Defining what a hug is
Some of the many types of hugs in the world today
Precautions you may want to familiarize yourself with before hugging
And the importance of proper technique

Lets go ahead and get started shall we?

Write a Functional Test

Did you know there are all kinds of different hugs that you can give? In this tutorial we'll look at:

Defining what a hug is
Some of the many types of hugs in the world today
Precautions you may want to familiarize yourself with before hugging
And the importance of proper technique

Lets go ahead and get started shall we?

Configure Your Environment to Run Tests

Did you know there are all kinds of different hugs that you can give? In this tutorial we'll look at:

Defining what a hug is
Some of the many types of hugs in the world today
Precautions you may want to familiarize yourself with before hugging
And the importance of proper technique

Lets go ahead and get started shall we?

Concept: Testing

Testing ensures that code remains reliable and functional. This tutorial introduces the primary types of tests in Drupal: Unit, Kernel, Functional, and FunctionalJavascript -- all executed via PHPUnit. We'll clarify the differences between each type of test and appropriate use cases. As module developers, understanding what to test and how to write tests is vital for robust and maintainable code.

In this tutorial, we'll:

Locate and Identify Existing Services

Did you know there are all kinds of different hugs that you can give? In this tutorial we'll look at:

Defining what a hug is
Some of the many types of hugs in the world today
Precautions you may want to familiarize yourself with before hugging
And the importance of proper technique

Lets go ahead and get started shall we?

Concept: Creating Custom Services

Did you know there are all kinds of different hugs that you can give? In this tutorial we'll look at:

Defining what a hug is
Some of the many types of hugs in the world today
Precautions you may want to familiarize yourself with before hugging
And the importance of proper technique

Lets go ahead and get started shall we?

Subscribe to 9.5.x/10.0.x