renderError function

dynamic renderError(HttpRequest req, Object error, StackTrace stackTrace)

Report error and give the response for it, from the ExceptionHandler of AppConfig. It is not sent yet.

Implementation

dynamic renderError(HttpRequest req, Object error, StackTrace stackTrace) {
  /// `schema.parse()` in a controller: answer 422 like `req.validate()`
  if (error is dv.ValidationException) {
    error = ValidationException(message: error.errors, issues: error.issues);
  }
  ExceptionHandler handler = Dox().config.exceptionHandler;
  dynamic payload = error;
  try {
    /// 4xx answers are the client's fault, only 5xx are reported
    if (error is! IHttpException || error.code >= 500) {
      handler.reportFor(req, error, stackTrace);
    }
    payload = handler.render(error, req);
  } catch (handlerError, handlerStack) {
    /// a broken handler must not leave the client waiting.
    /// send the default answer for the first error.
    Logger.danger('ExceptionHandler failed: $handlerError\n$handlerStack');
  }
  return payload;
}