Book Image

Drupal 9 Module Development - Third Edition

By : Daniel Sipos
Book Image

Drupal 9 Module Development - Third Edition

By: Daniel Sipos

Overview of this book

With its latest release, Drupal 9, the popular open source CMS platform has been updated with new functionalities for building complex Drupal apps with ease. This third edition of the Drupal Module Development guide covers these new Drupal features, helping you to stay on top of code deprecations and the changing architecture with every release. The book starts by introducing you to the Drupal 9 architecture and its subsystems before showing you how to create your first module with basic functionality. You’ll explore the Drupal logging and mailing systems, learn how to output data using the theme layer, and work with menus and links programmatically. Once you’ve understood the different kinds of data storage, this Drupal guide will demonstrate how to create custom entities and field types and leverage the Database API for lower-level database queries. You’ll also learn how to introduce JavaScript into your module, work with various file systems, and ensure that your code works on multilingual sites. Finally, you’ll work with Views, create automated tests for your functionality, and write secure code. By the end of the book, you’ll have learned how to develop custom modules that can provide solutions to complex business problems, and who knows, maybe you’ll even contribute to the Drupal community!
Table of Contents (20 chapters)
3
Chapter 3: Logging and Mailing

Summary

In this chapter, we looked at Views from all sorts of module developer-oriented angles. We saw how we can expose our product entity type to Views. That was a breeze. But then, we also saw how our custom player and team data from Chapter 8, The Database API, can be exposed to Views. Even if we did have to write some code for that, much of it was quite boilerplate, as we were able to leverage the existing Views plugin ecosystem for almost everything we wanted. However, since these are all plugins, we also saw how we can create our own field, filter, and argument plugins to handle those exceptional cases in which what exists may not be enough.

Closely tied to this, we also talked a bit about altering the way other modules expose their data to Views. The most notable example here was the ability to easily add more fields (and plugins) to entity-based Views in order to enrich them with custom functionalities.

Finally, we talked a bit about how we can approach the theming aspect...