8/10/2023 0 Comments Learn drupal module developmentMoreover, you should be able to understand and implement some of the most commonly used techniques in Drupal module development.Ĭreating a simple Drupal 9 module is not difficult. We'll illustrate this with a fairly common example of when you'd need to do this-performing redirects from incoming requests.īy the end of this chapter, you should have the foundational knowledge necessary to build your own module from scratch. Moreover, we will also look at using the Event Dispatcher component and, more importantly, subscribing to events. This is a very common task that any Drupal developer needs to do very often. Here, we will see how block plugins are defined and how they can expose their own configuration forms to be more flexible.Īlthough not strictly related to our Hello World example, we will also look at how to work with links programmatically in Drupal. Why should users only be greeted on a specific page? We will create a custom block that can be placed anywhere on the site and will display the same message. However, we will also discuss how to store some basic configuration values and add dependencies to our existing services.įinally, we want to become a bit more flexible. The key takeaway here will be the use of the Form API. It will be stored in configuration, and we will alter our service to make use of that configuration. Then, we will create a form where an administrator will be able to override the message shown on our page. This simple example, however, will illustrate what services are and how to interact with the service container in order to make use of them. After all, we don't want the same message presented to the user all day long. Next, we will define a service that our Controller will use to pimp out our message. In this module, we will define a route that maps to a controller and that outputs this age-old programming message. Creating a new Drupal 9 module – the files that are necessary to get startedĬoncretely, in this chapter, we will create a new custom module called Hello World.Here are some of the important topics that we will cover in this chapter: Now that we have covered some of the introductory aspects of Drupal module development, it's time to dive right into the meat of what we are doing here-module creation. Finally, you’ll work with Views, create automated tests for your functionality, and write secure code.īy 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! 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. 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 explore the Drupal logging and mailing systems, learn how to output data using the theme layer, and work with menus and links programmatically. 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. 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. 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.
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