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

Fetching GET post output in JSON objects

So far, we have seen how to GET posts and JSON objects. The preceding queries are sufficient to fetch (or GET) data for you, but how will you output the posts?

In WordPress, we often output posts by using the get_post() function that uses the global $post object. In a similar manner, we can use a loop that runs through all the posts retrieved by REST API and outputs them accordingly. For example, consider the following code:

$url = add_query_arg( 'per_page', 10, rest_url() ); 
$posts = get_json( $posts ); 
if ( ! empty( $posts ) ) { 
  foreach( $posts as $post ) { ?> 
  <article id="<?php echo esc_attr($post->ID ); ?>"> 
    <h1><?php echo $post->title; ?></h1> 
    <div><?php wpautop( $post->content ); ?></div> 
<?php } //foreach 

Looking at the outcome of this loop when used within a standard function, this...