Determines whether WordPress is currently serving a REST API request.

Description

The function relies on the ‘REST_REQUEST’ global. As such, it only returns true when an actual REST request is being made. It does not return true when a REST endpoint is hit as part of another request, e.g. for preloading a REST response. See wp_is_rest_endpoint() for that purpose.

This function should not be called until the ‘parse_request’ action, as the constant is only defined then, even for an actual REST request.

Return

Source

function wp_is_serving_rest_request() {
	return defined( 'REST_REQUEST' ) && REST_REQUEST;
}

View all references View on Trac View on GitHub

Changelog