Book Image

Magento 2 Developer's Guide

Book Image

Magento 2 Developer's Guide

Overview of this book

Magento is one of the most exciting, flexible, and customizable e-commerce systems. It offers you an extensive suite of powerful tools for creating and managing an online store. After years of development, Magento 2 introduces itself with a strong emphasis on modularity, Web API's, automated testing and overall new technology stack platform.The long-awaited Magento 2 release introduces a whole new e-commerce platform to develop online stores. The all new Magento 2 architecture, Web APIs, and a host of other features are equally challenging to master as much as they are exciting to use. Tshis book will ease the learning curve by offering step-by-step guidance on how to extend the core functionality of your Magento 2 store. This book is your one-stop guide to build and customize a quality e-commerce website from the latest version of one of the largest, fastest growing, and most popular e-commerce platforms—Magento 2. We start off with an introduction to the fundamental concepts of Magento to give you a foundation to work from. We then move on to configure the development and basic production environment for Magento. After this, you’ll get to grips with the major concepts and conventions that are new to the Magento 2 platform. We then delve deeper to get to the core of automated deployments, persisting data, writing data fixture scripts and applying various backend and frontend modifications. As we near the end of the book, you will learn to make API calls and write automated tests. Finally, you will be guided through building a full-blown helpdesk module from scratch. By the end of this book, you will have learned a wide range of techniques to extend and customize your Magento 2 store to fit the requirements of your business.
Table of Contents (19 chapters)
Magento 2 Developer's Guide
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Chapter 6. Plugins

In this chapter, we will take a look at a feature of Magento called plugins. Before we start with plugins, we first need to understand the term interception because the two terms are used somewhat interchangeably when dealing with Magento.

Interception is a software design pattern that is used when we want to insert code dynamically without necessarily changing the original class behavior. This works by dynamically inserting code between the calling code and the target object.

The interception pattern in Magento is implemented via plugins. They provide the before, after, and around listeners, which help us extend the observed method behavior.

In this chapter, we will cover the following topics:

  • Creating a plugin

  • Using the before listener

  • Using the after listener

  • Using the around listener

  • The plugin sort order

Before we start creating a plugin, it is worth noting their limitations. Plugins cannot be created for just any class or method, as they do not work for the following:

  • Final...