Drupal 8 Development Cookbook

Drupal 8 Development Cookbook - Second Edition

By : Matt Glaman

Buy this Book

Drupal 8 Development Cookbook - Second Edition

By: Matt Glaman

Buy this Book

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.

Title Page

Credits

About the Author

About the Reviewer

www.PacktPub.com

Customer Feedback

Preface

Free Chapter

Up and Running with Drupal 8

Introduction

Installing Drupal

Using a distribution with Drupal

Installing modules and themes

Using multisites in Drupal 8

Tools for setting up an environment

Running tests - Simpletest and PHPUnit

The Content Authoring Experience

Introduction

Configuring the WYSIWYG editor

Adding and editing content

Creating a menu and linking content

Providing inline editing

Creating a custom content type

Applying new Drupal 8 core field types

Customizing the form display of a node

Customizing the display output of a node

Displaying Content through Views

Introduction

Listing content

Editing the default admin interfaces

Creating a block from a View

Utilizing dynamic arguments

Adding a relationship in a View

Providing an Entity Reference result View

Extending Drupal

Introduction

Creating a module

Defining a custom page

Defining permissions

Providing the configuration on the installation or update

Creating an event subscriber

Using Features 3.0

Frontend for the Win

Introduction

Creating a custom theme based on Classy

Using the new asset management system

Twig templating

Using the Breakpoint module

Using the Responsive Image module

Creating Forms with the Form API

Introduction

Creating a form

Using new HTML5 elements

Validating form data

Processing submitted form data

Altering other forms

Plug and Play with Plugins

Introduction

Creating blocks using plugins

Creating a custom field type

Creating a custom field widget

Creating a custom field formatter

Creating a custom plugin type

Multilingual and Internationalization

Introduction

Translating administrative interfaces

Translating configuration

Translating content

Creating multilingual views

Configuration Management - Deploying in Drupal 8

Introduction

Importing and exporting configurations

Synchronizing site configurations

Using command-line workflow processes

Updating and installing new module configurations

The Entity API

Introduction

Creating a configuration entity type

Creating a content entity type

Creating a bundle for a content entity type

Implementing custom access control for an entity

Providing a custom storage handler

Creating a route provider

Off the Drupalicon Island

Introduction

Implementing and using a third-party JavaScript library

Implementing and using a third-party CSS library

Implementing and using a third-party PHP library

Web Services

Introduction

Enabling RESTful interfaces

Using POST to create data

Using PATCH to update data

Using Views to provide custom data sources

Authentication

Using JSON API

The Drupal CLI

Introduction

Rebuilding cache in Drupal Console or Drush

Using Drush to interact with the database

Using Drush to manage users

Scaffolding code through Console

Making a Drush command

Making a Console command

Customer Reviews

5 star

4 star

3 star

2 star

1 star

Creating an event subscriber

New to Drupal 8 is the event dispatcher system. One of the many benefits of Drupal is the ability to react to specific processes and alter or react to them. Unlike the hook system that exists in Drupal 8, and has for many versions of Drupal, the event dispatch system uses explicit registration to an event.

The events dispatcher system comes from the Symfony framework and allows components to easily interact with one another. Within Drupal, and integrated Symfony components, events are dispatched, and event subscribers can listen to the events and react to changes or other processes.

In this recipe, we will subscribe to the REQUEST event, which fires when a request is first handled. If the user is not logged in, we will navigate them to the login page.

How to do it...

Create src/EventSubscriber/RequestSubscriber.php in your module.
Define the RequestSubscriber class, which implements the EventSubscriberInterface interface:

<?php

 namespace Drupal\mymodule\EventSubscriber...

Drupal 8 Development Cookbook - Second Edition

By : Matt Glaman

Drupal 8 Development Cookbook - Second Edition

By: Matt Glaman

Overview of this book

Related Content you might be interested in

Current Title:

Drupal 8 Development Cookbook - Second Edition

Mastering Drupal 8

Drupal 8 Blueprints

Drupal 8 Module Development.

Creating an event subscriber

How to do it...