From 65137f294e97b98723de44bd5363b8fa0e8a6be5 Mon Sep 17 00:00:00 2001
From: Tobias Witek <tobi@tobi-wan-kenobi.at>
Date: Fri, 14 Feb 2020 21:52:23 +0100
Subject: [PATCH] [engine] Small bugfix if no IDs are configured

see #547
---
 bumblebee/engine.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/bumblebee/engine.py b/bumblebee/engine.py
index 377dfc4..fd3bbe9 100644
--- a/bumblebee/engine.py
+++ b/bumblebee/engine.py
@@ -295,11 +295,14 @@ class Engine(object):
             self._current_module = module
             module.update_wrapper(module.widgets())
             if module.error is None:
-                widget_ids = module.parameter('id', '').split(',')
+                widget_ids = []
+                if module.parameter('id'):
+                    widget_ids = module.parameter('id').split(',')
                 idx = 0
                 for widget in module.widgets():
                     widget.link_module(module)
-                    widget.id = widget_ids[idx] if idx < len(widget_ids) else widget.id
+                    if idx < len(widget_ids):
+                        widget.id = widget_ids[idx]
                     idx = idx + 1
                     self._output.draw(widget=widget, module=module, engine=self)
             else: