Book Image

Drupal 8 Module Development - Second Edition

By : Daniel Sipos
Book Image

Drupal 8 Module Development - Second Edition

By: Daniel Sipos

Overview of this book

Drupal 8 comes with a release cycle that allows for new functionality to be added at a much faster pace. However, this also means code deprecations and changing architecture that you need to stay on top of. This book updates the first edition and includes the new functionality introduced in versions up to, and including 8.7. The book will first introduce you to the Drupal 8 architecture and its subsystems before diving into creating your first module with basic functionality. You will work with the Drupal logging and mailing systems, learn how to output data using the theme layer and work with menus and links programmatically. Then, you will learn how to work with different kinds of data storages, create custom entities, field types and leverage the Database API for lower level database queries. You will further see how to introduce JavaScript into your module, work with the various file systems and ensure the code you write works on multilingual sites. Finally, you will learn how to programmatically work with Views, write automated tests for your functionality and also write secure code in general. By the end, you will have learned how to develop your own custom module that can provide complex business solutions. And who knows, maybe you’ll even contribute it back to the Drupal community. Foreword by Dries Buytaert, founder of Drupal.
Table of Contents (20 chapters)

Views hooks

Views also comes with a lot of hooks. We've already seen an important one that allowed us to expose our own data to Views. But there are many more, and you should check out the views.api.php file for more information.

Quite a few exist for altering plugin information for all sorts of plugin types. But there are also some important ones that deal with Views execution at runtime. The most notable of these is hook_views_query_alter() which allows us to make alterations to the final query that is going to be run. There is also hook_views_post_render() and hook_views_pre_render(), which allow us to make alterations to the View results. For example, to change the order of the items or something like that.

I recommend you check out their respective documentation and make yourself aware of what you can do with these hooks. At times they can be helpful, even if, with Drupal...