What is WordPress Hook: rest_allowed_cors_headers
The rest_allowed_cors_headers hook in WordPress is used to modify the allowed CORS (Cross-Origin Resource Sharing) headers for the REST API.
Understanding the Hook: rest_allowed_cors_headers
The rest_allowed_cors_headers hook is located within the REST API process in WordPress. It allows developers to add, remove, or modify the allowed CORS headers for requests made to the REST API endpoints.
Hook Parameters (if applicable): rest_allowed_cors_headers
The rest_allowed_cors_headers hook accepts an array of allowed CORS headers as its parameter. Developers can specify the headers they want to allow for cross-origin requests to the REST API endpoints.
Hook Doesn’t Work: rest_allowed_cors_headers
If the rest_allowed_cors_headers hook doesn’t work as expected, it could be due to incorrect implementation or conflicts with other plugins or themes. To troubleshoot, developers should check for any syntax errors in the code and ensure that the hook is being added at the appropriate time during the REST API request process.
Best Practices & Usage Notes (if applicable): rest_allowed_cors_headers
When using the rest_allowed_cors_headers hook, it’s important to consider the security implications of allowing certain CORS headers. Developers should only allow the necessary headers for their specific use case to minimize potential security risks.
Usage Example: rest_allowed_cors_headers
“`php
function custom_rest_cors_headers( $headers ) {
$headers[] = ‘X-Custom-Header’;
return $headers;
}
add_filter( ‘rest_allowed_cors_headers’, ‘custom_rest_cors_headers’ );
“`
