I'm currently trying to wrap my head around Wordpress and its relation to the REST API. All of theses issues are only occurring in the context of plugin development. So far I had setup my endpoint and written my callback which will be executed whenever someone is sending a GET-Request to said endpoint. However, my callback is never called. This is the file which I've written so far.
/*
* Plugin Name: cola-learning
*/
if(!defined('ABSPATH')){
die;
}
if(!function_exists('add_action')){
echo 'You cant access this ressource!';
exit;
}
function PrintRESTResponse()
{
return rest_ensure_response("student");
}
function SetupREST()
{
return register_rest_route("student/v1","/view/",[
'methods' => 'GET',
'callback' => 'PrintRESTResponse'
],false);
}
add_action('rest_api_init','SetupREST');
Perhaps it might also help, if I'll give some background information about my development machine: - OS: Windows 10 - Server: Apache Web Server (included inside XAMPP) - Wordpress Version: 5.3.2 - PHP Version: 7.4 - Development IDE: Eclipse 2019-12 CDT ( with PHP Plugin )
From my research, everything should work fine. However, it doesnt :/ Did I miss something crucial?
Update:
WordPress REST API Routing
WordPress is having a default route for all request which are directed to the REST API ( at least if you use XAMPP with the Bitnami WordPress application module). Now, if one wants to send a request to said REST API, the person needs to use an URL with the form of ip:port/wp-json/rest_route. ip ressembles the ip address of the server which is hosting wordpress. port is the port of said server. wp-json, however, is the portion which differs an ordinary request from a request to the REST API. Everything after this portion (rest_route) is the rest route which I've defined in the above source code.
What went wrong?
My request was pointed to the wrong endpoint. Therefore I used the URL 'localhost:wpPort/wordpress/student/v1/view/'. However, the 'wp-json/' portion is missing. Therefore WordPress will search for a page that doesn't exist in the first place. Instead I should have used the URL 'localhost:wpPort/wordpress/wp-json/student/v1/view/'.
After some troubleshooting it turns out the URL being used to test was missing a part of the endpoint path.
Here is the correct path to test the newly registered endpoint.
localhost:80/wordpress/wp-json/student/v1/view/
Here's some more reading on WP Rest API endpoints:
https://developer.wordpress.org/rest-api/extending-the-rest-api/routes-and-endpoints/