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

Implementing REST API and JavaScript with taxonomies

Now that we have covered how to perform HTTP requests and query our database using REST API, it is time to implement it. We will now be focusing on implementation of REST API and JavaScript with taxonomies in WordPress.

How to send GET requests for taxonomies

In WordPress, you can query for posts by taxonomy. Alternatively, you can also list terms in taxonomy for a given post.

It is fairly easy and is just a matter of few HTTP requests.

To get posts from a given category, we pass the parameter category_name. For example, for the category sample, we will pass the request as follows:

sample_url( 'wp/v2/posts?filter[category_name]=sample' ); 

Similarly, to get posts with a given tag, use the tag parameter. For example, for the tag sampletag, we will pass the following request:

sample_url( 'wp/v2/posts?filter[tag]=sampletag' ); 

And if you wish to query multiple taxonomies, you can combine them in the same request:

sample_url( 'wp/v2/posts...