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

Translating text strings using Poedit

After inserting all the necessary code to look up translations for text elements, we need to create the actual translation files. While there are multiple tools available to perform this task, we will focus our efforts around the most popular one, the free multiplatform Poedit.

This recipe shows how to extract all the strings to be translated from the plugin's code using Poedit, translate them, and save the resulting language file under the plugin directory.

Getting ready

You should have already followed the Modifying shortcode output for translation recipe to have a starting point for this recipe. Alternatively, you can get the resulting code (Chapter 11/ch11-hello-world/ch11-hello-world-v3.php) for that recipe from the code bundle. You should rename the file to ch11-hello-world.php before starting.

How to do it...

  1. Navigate to the ch11-hello-world folder of the WordPress plugin directory of your development installation.
  2. Create a new subdirectory named languages...