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)

Performing entity validation

In this recipe, we will walk through entity validation. Drupal has integrated with the Symfony Validator component. Entities can be validated before saving. We will build off of the last recipe, which allows updating an article node to add validation of its values.

How to do it…

  1. We will be adding validation to the update method from the previous recipe:
      public function update(Request $request,
        NodeInterface $node): JsonResponse {
       $content = $request->getContent();
       $json = \Drupal\Component\Serialization\
          Json::decode($content);
       if (isset($json['title'])) {
        $node->setTitle($json['title']);
       }
       if (isset($json['body'])) {
        $node->set('body', $json['body']);
       }
      ...