What is WordPress Hook: rest_exposed_cors_headers
The rest_exposed_cors_headers hook in WordPress is used to add or modify Cross-Origin Resource Sharing (CORS) headers for the REST API. This hook allows developers to customize the CORS headers that are sent with REST API responses.
Understanding the Hook: rest_exposed_cors_headers
The rest_exposed_cors_headers hook is located within the REST API process in WordPress. It provides a way to modify the CORS headers that are included in the response to REST API requests. By using this hook, developers can control which origins are allowed to access the REST API, as well as other CORS-related settings.
Hook Parameters (if applicable): rest_exposed_cors_headers
The rest_exposed_cors_headers hook does not accept any parameters. It is simply a way to modify the CORS headers that are sent with REST API responses.
Hook Doesn’t Work: rest_exposed_cors_headers
If the rest_exposed_cors_headers hook doesn’t seem to be working, it could be due to conflicts with other plugins or themes that are also modifying the CORS headers. To troubleshoot this issue, try disabling other plugins or themes one by one to see if the problem is resolved. Additionally, ensure that the hook is being implemented correctly in your code.
Best Practices & Usage Notes (if applicable): rest_exposed_cors_headers
When using the rest_exposed_cors_headers hook, it’s important to be mindful of the security implications of allowing cross-origin requests. Only trusted origins should be allowed to access the REST API, and developers should carefully consider the implications of modifying CORS headers.
Usage Example: rest_exposed_cors_headers
“`php
function custom_cors_headers( $headers ) {
$headers[‘Access-Control-Allow-Origin’] = ‘https://example.com’;
$headers[‘Access-Control-Allow-Methods’] = ‘GET, POST, PUT, DELETE’;
return $headers;
}
add_filter( ‘rest_exposed_cors_headers’, ‘custom_cors_headers’ );
“`
