rest_convert_error_to_response

WordPress Version: 5.9

/**
 * Converts an error to a response object.
 *
 * This iterates over all error codes and messages to change it into a flat
 * array. This enables simpler client behaviour, as it is represented as a
 * list in JSON rather than an object/map.
 *
 * @since 5.7.0
 *
 * @param WP_Error $error WP_Error instance.
 *
 * @return WP_REST_Response List of associative arrays with code and message keys.
 */
function rest_convert_error_to_response($error)
{
    $status = array_reduce($error->get_all_error_data(), static function ($status, $error_data) {
        return (is_array($error_data) && isset($error_data['status'])) ? $error_data['status'] : $status;
    }, 500);
    $errors = array();
    foreach ((array) $error->errors as $code => $messages) {
        $all_data = $error->get_all_error_data($code);
        $last_data = array_pop($all_data);
        foreach ((array) $messages as $message) {
            $formatted = array('code' => $code, 'message' => $message, 'data' => $last_data);
            if ($all_data) {
                $formatted['additional_data'] = $all_data;
            }
            $errors[] = $formatted;
        }
    }
    $data = $errors[0];
    if (count($errors) > 1) {
        // Remove the primary error.
        array_shift($errors);
        $data['additional_errors'] = $errors;
    }
    return new WP_REST_Response($data, $status);
}