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

Managing multiple sets of user settings from a single admin page

Throughout this chapter, you have learned how to create configuration pages to manage single sets of configuration options for our plugins. In some cases, only being able to specify a single set of options will not be enough. For example, looking back at the Twitter embed shortcode plugin that was created in the previous chapter, a single configuration panel would only allow users to specify one set of options, such as the desired Twitter feed dimensions or the number of tweets to display.

A more flexible solution would be to allow users to specify multiple sets of configuration options, which could then be called up by using an extra shortcode parameter (for example, [twitterfeed user_name="WordPress" option_id="2"]).

While the first thought that might cross your mind to configure such a plugin is to create a multi-level menu item with submenus to store a number of different settings, this method would produce a very awkward...