Book Image

Learning WordPress REST API

By : Sufyan bin Uzayr, Mathew Rooney
Book Image

Learning WordPress REST API

By: Sufyan bin Uzayr, Mathew Rooney

Overview of this book

The WordPress REST API is a recent innovation that has the potential to unlock several new opportunities for WordPress developers. It can help you integrate with technologies outside of WordPress, as well as offer great flexibility when developing themes and plugins for WordPress. As such, the REST API can make developers’ lives easier. The book begins by covering the basics of the REST API and how it can be used along with WordPress. Learn how the REST API interacts with WordPress, allowing you to copy posts and modify post metadata. Move on to get an understanding of taxonomies and user roles are in WordPress and how to use them with the WordPress REST API. Next, find out how to edit and process forms with AJAX and how to create custom routes and functions. You will create a fully-functional single page web app using a WordPress site and the REST API. Lastly, you will see how to deal with the REST API in future versions and will use it to interact it with third-party services. By the end of the book, you will be able to work with the WordPress REST API to build web applications.
Table of Contents (16 chapters)
Learning WordPress REST API
About the Authors
About the Reviewer

Adding custom routes to WordPress REST API

In the second version of REST API, there is a new function called register_rest_route() that deserves our attention. It lets you add a route to REST API and then further pass it to an array of endpoints. For each endpoint provided, a defined value for each field will be given in our query, including defaults, validation and callbacks, sanitation, and separate permissions callback.

The focus will be put on the following three main key points:

  • Callback

  • Field arguments

  • Permissions check

They will provide us with an idea on how the architectural side of the API functions. It is important to note that you will know that your requests are authorized, and your fields sanitized, and everything is in place once we get to our callback. This very same architectural structure is what will enforce separation of concerns and help maintain your code modular.