From ff11f7f3d3ff2c3d8773a0626fa053da8f7c84f9 Mon Sep 17 00:00:00 2001
From: Martin Edenhofer <me@edenhofer.de>
Date: Tue, 22 May 2018 08:14:13 +0200
Subject: [PATCH] Improved error handling of of invalid setting attributes.

---
 .../javascripts/app/controllers/_settings/area_item.coffee | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/app/assets/javascripts/app/controllers/_settings/area_item.coffee b/app/assets/javascripts/app/controllers/_settings/area_item.coffee
index 877caeee0..f268f01e4 100644
--- a/app/assets/javascripts/app/controllers/_settings/area_item.coffee
+++ b/app/assets/javascripts/app/controllers/_settings/area_item.coffee
@@ -9,6 +9,13 @@ class App.SettingsAreaItem extends App.Controller
 
   render: =>
 
+    # input validation for error handling
+    if !@setting.options
+      throw "No such options for #{@setting.name}"
+
+    if !@setting.options.form
+      throw "No such options.form for #{@setting.name}"
+
     # defaults
     directValue = 0
     for item in @setting.options['form']