Quick & simple custom REST API routes for WordPress

WordPress REST API is a fantastic tool for delivering data either to the front end when you need to use it via JavaScript, or externally if you need to broadcast the data for other services/applications to consume. Fortunately, it’s also really easy to register custom REST API routes to display exactly what we need.

There are a few options available and if you need a robust system you might consider setting up a custom controller that extends the core WP_REST_Controller class. That’s a great approach if you need a lot of structure and control.

If, however, you need to fire up a route in a hurry, a simple script like the following does a fantastic job. This example will provide a nice output of JSON formatted data at the /wp-json/my-namespace/v1/some/route URI.

add_action( 'rest_api_init', function () {
register_rest_route( 'my-namespace/v1', 'some/route', [
'methods' => [ 'GET' ],
'permission_callback' => '__return_true',
'callback' => function () {
// You can return arrays or objects here — WordPress will
// format them for output as JSON.
return [
'some' => 'custom',
'data' => 'can',
'go' => 'here',
} );

About the author

Phil Kurth is a web developer living in Melbourne, Australia. Phil has a long history of WordPress development and enjoys building tools to empower others in their web design/development practice.

When not working with the web, Phil is usually spending time with his two young sons or is out hiking through the Australian bush.

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