Book Image

Drupal 8 Development: Beginner's Guide - Second Edition

By : Neeraj Kumar, Tassos Koutlas, Samuel Keen, Edward Crompton, Krishna Kanth, Rakesh James, Malabya Tewari, Kurt Madel
Book Image

Drupal 8 Development: Beginner's Guide - Second Edition

By: Neeraj Kumar, Tassos Koutlas, Samuel Keen, Edward Crompton, Krishna Kanth, Rakesh James, Malabya Tewari, Kurt Madel

Overview of this book

<p>Drupal is one of the most popular platforms with which to develop websites. With more and more organizations looking to build engaging digital experience for their stakeholders, the Drupal Content Management System offers a mobile-first platform with native support for integrations, better performance, and scalability. The new version brings significant changes to its module development and theme creation techniques, improving performance and refining the development experience.</p> <p>This book will help you develop your own website using Drupal 8 in a step-by-step manner. You’ll start off by setting up your development environment, enabling you to begin writing custom code for a Drupal-powered website through PHPStorm. You will learn about configuration management and creating custom content types before exploring the HTML5 features included with Drupal 8.</p> <p>You will then get familiar with Drupal 8’s mobile-first features, explore the built-in WYSIWYG and in-line editing capabilities of Drupal 8, and enhance the overall authoring experience. Later, you will create and enhance a Media Entity Lightbox module, before taking an in-depth look at the Views module.</p> <p>We then cover some advanced search concepts and walk you through the installation and integration of the Java-based Apache Solr search engine. Finally, you will explore and configure the built-in support for REST and extend its support by installing the RESTful module. By the end of the book, you will have created a recipe sharing website while gaining a solid understanding of development best practices for Drupal 8.</p>
Table of Contents (20 chapters)
Drupal 8 Development Beginner's Guide Second Edition
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface
Index

What is a theme?


A theme adjusts, or overrides, the default appearance of your Drupal site. It does this by giving us the ability to change the markup (with templating), functionality (with JavaScript), and appearance (with CSS). Theming is the final layer of development before the work is viewed by the user. The icing on the cake!

By default, Drupal 8 comes shipped with a number of themes in core. Let's have a look at them.

In PhpStorm, go to the root directory of your project and then navigate to core | themes. In this directory, you'll find five themes: Bartik, Classy, Seven, Stable, and Stark. What are these and why are they here?

Let's discuss these core themes we have available by default, as they each have a distinct use:

  • Bartik has been the default theme for both Drupal 7 and Drupal 8. It's well documented, well maintained, and contains some useful theme functions.

  • Seven has been the default administration theme for Drupal 7 and 8. The styling it contains applies to the admin interface...