Book Image

Drupal 10 Development Cookbook - Third Edition

By : Matt Glaman, Kevin Quillen
Book Image

Drupal 10 Development Cookbook - Third Edition

By: Matt Glaman, Kevin Quillen

Overview of this book

This new and improved third edition cookbook is packed with the latest Drupal 10 features such as a new, flexible default frontend theme - Olivero, and improved administrative experience with a new theme - Claro. This comprehensive recipe book provides updated content on the WYSIWYG (What You See Is What You Get) editing experience, improved core code performance, and code cleanup. Drupal 10 Development Cookbook begins by helping you create and manage a Drupal site. Next, you’ll get acquainted with configuring the content structure and editing content. You’ll also get to grips with all new updates of this edition, such as creating custom pages, accessing and working with entities, running and writing tests with Drupal, migrating external data into Drupal, and turning Drupal into an API platform. As you advance, you’ll learn how to customize Drupal’s features with out-of-the-box modules, contribute extensions, and write custom code to extend Drupal. By the end of this book, you’ll be able to create and manage Drupal sites, customize them to your requirements, and build custom code to deliver your projects.
Table of Contents (17 chapters)

Providing a custom storage handler

Storage handlers control the loading, saving, and deleting of an entity. Content entity types have the default storage handler of \Drupal\Core\Entity\Sql\SqlContentEntityStorage. Configuration entity types have the default storage handler of \Drupal\Core\Config\Entity\ConfigEntityStorage. These classes can be extended to implement alternative methods and set as the entity type’s storage handler.

In this recipe, we will create a method for the Message entity type created previously in this chapter to load all messages of a specific type.

How to do it…

  1. Create a MessageStorage class in the module’s src directory. This class will extend the SqlContentEntityStorage class:
    <?php
    namespace Drupal\mymodule;
    use Drupal\Core\Entity\Sql\SqlContentEntityStorage;
    class MessageStorage extends SqlContentEntityStorage {
    }

The default storage for content entity types is the SqlContentEntityStorage class, which is why we extend...