Book Image

WordPress Plugin Development Cookbook - Second Edition

By : Yannick Lefebvre
Book Image

WordPress Plugin Development Cookbook - Second Edition

By: Yannick Lefebvre

Overview of this book

WordPress is a popular, powerful, and open Content Management System. Learning how to extend its capabilities allows you to unleash its full potential, whether you're an administrator trying to find the right extension, a developer with a great idea to enhance the platform for the community, or a website developer working to fulfill a client's needs. This book shows readers how to navigate WordPress' vast set of API functions to create high-quality plugins with easy-to-configure administration interfaces. With new recipes and materials updated for the latest versions of WordPress 4.x, this second edition teaches you how to create plugins of varying complexity ranging from a few lines of code to complex extensions that provide intricate new capabilities. You'll start by using the basic mechanisms provided in WordPress to create plugins and execute custom user code. You will then see how to design administration panels, enhance the post editor with custom fields, store custom data, and modify site behavior based on the value of custom fields. You'll safely incorporate dynamic elements on web pages using scripting languages, and build new widgets that users will be able to add to WordPress sidebars and widget areas. By the end of this book, you will be able to create WordPress plugins to perform any task you can imagine.
Table of Contents (20 chapters)
Title Page
About the Author
About the Reviewers
Customer Feedback


In the last few chapters, you learned how to create custom plugin configuration panels and how to set up custom post types. With this knowledge in hand, we will now see how to customize the post and page editors using meta boxes.

Meta boxes are a very useful tool in the creation of WordPress plugins. They were first used to organize large administration panels into manageable sections in Chapter 3, User Settings and Administration Pages, and then continued to be a key element in the creation of tailored interfaces to edit custom post types in Chapter 4, The Power of Custom Post Types.

This chapter explores how meta boxes can be used to augment the default post and page editors' capabilities. While WordPress posts and pages already offer a lot of functionalities in a default installation, custom data entry fields go a long way in crafting a user experience that is much smoother than using the custom fields editor. These extra fields can be used to store anything. For example, they...