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


As seen in Chapter 4, The Power of Custom Post Types, custom post types provide a very powerful and easy way to create and manage custom content in a WordPress installation. That being said, if the new items that you wish to create do not benefit from having access to the built-in text editor and have a large amount of data fields that need to be stored in the system, storing them using custom post types can actually become cumbersome. More specifically, each custom field requires a separate function call to be associated with a custom post. Also, custom fields have limited functionality, since they store all their information in simple text fields, making it difficult to perform ordered queries based on special data types, such as dates.

An alternative solution to manage custom content is to create new tables in the website's database and offer a custom interface to manage these new items.

While working directly with the website database might sound like a tall order, and should...