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

Processing requests (and responses)

The WP_REST_Request class will receive as an object the callback function of each endpoint, which will then further be passed as an object. To receive the parameters from the request, which are mapped from any transport method provided, we will be using the efficient method of get_params() to get all the data from the validated and sanitized request, with all of the correspondent defaults filled in. Instead of using the method of accessing the global GET or POST variables, we will be using the method described previously, and the reasons for that are the following:

  • The array that is returned is validated and sanitized and will handle the switches between the transport method. Even if we choose to switch the endpoints definition from GET to PUT, which is a one—line change, then the code will suffer no consequences and will be functional and will as expected.

  • Better abstraction is also acquired by using this method. Even within our basic version of the API...