From 1a2dead92bb7fa7bcf976a7d9e20860d6bbf318c Mon Sep 17 00:00:00 2001
From: Daniel Klaffenbach <daniel.klaffenbach@hrz.tu-chemnitz.de>
Date: Thu, 18 Apr 2019 11:43:59 +0200
Subject: [PATCH] tuc2014.urls: Add a better exception if crispy_forms was not
 found

Normally we don't require crispy_forms, but the language picker
uses it. Make this clear through a better exception message.
---
 tuc2014/urls.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tuc2014/urls.py b/tuc2014/urls.py
index 14dd44b..65b163b 100644
--- a/tuc2014/urls.py
+++ b/tuc2014/urls.py
@@ -1,7 +1,12 @@
 # -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 from django.conf.urls import include, url
-from .views import change_language
+from django.core.exceptions import ImproperlyConfigured
+
+try:
+    from .views import change_language
+except ImportError:
+    raise ImproperlyConfigured("crispy_forms is required for the tuc2014 language picker.")
 
 urlpatterns = [
     url(r'^i18n/', include('django.conf.urls.i18n', namespace='djangoi18n')),
-- 
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