Book Image

Drupal 8 Development Cookbook - Second Edition

By : Matt Glaman
Book Image

Drupal 8 Development Cookbook - Second Edition

By: Matt Glaman

Overview of this book

Began as a message board, Drupal today is open source software maintained and developed by a community of over 1,000,000 users and developers. Drupal is used by numerous local businesses to global corporations and diverse organizations all across the globe. With Drupal 8’s exciting features it brings, this book will be your go-to guide to experimenting with all of these features through helpful recipes. We’ll start by showing you how to customize and configure the Drupal environment as per your requirements, as well as how to install third-party libraries and then use them in the Drupal environment. Then we will move on to creating blocks and custom modules with the help of libraries. We will show you how to use the latest mobile-first feature of Drupal 8, which will help you make your apps responsive across all the major platforms. This book will also show you how to incorporate multilingual facilities in your sites, use web services and third-party plugins with your applications from inside Drupal 8, and test and deploy your apps.
Table of Contents (20 chapters)
Title Page
About the Author
About the Reviewer
Customer Feedback

Using new HTML5 elements

With the release of Drupal 8, Drupal has finally entered into the realm of HTML5. The Form API now allows utilization of HTML5 input elements out of the box. These include the following element types:

  • tel
  • email
  • number
  • date
  • url
  • search
  • range

This allows your forms in Drupal to leverage native device input methods along with native validation support.

Getting ready

This recipe will walk you through adding elements to a Drupal form. You will need to have a custom form implemented through a module, such as the one created in the Creating a form recipe of this chapter.

How to do it...

  1. To use the telephone input, you will need to add a new form element definition of the tel type to your buildForm method:
$form['phone'] = [ 
  '#type' => 'tel', 
  '#title' => $this->t('Phone'), 
  1. To use the email input, you will need to add a new form element definition of the email type to your buildForm method. It will validate the format of email addresses in the Form API: