From: Bryan <btbonval@gmail.com>
Date: Thu, 2 Jan 2014 02:21:16 +0000 (-0500)
Subject: This should allow cascading course deletion over notes, but might lose cache sync
X-Git-Tag: release-20150131~341
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=efb2631e9afb7046f358768a084ec1ab5ff78080;p=oweals%2Fkarmaworld.git

This should allow cascading course deletion over notes, but might lose cache sync
---

diff --git a/karmaworld/apps/notes/models.py b/karmaworld/apps/notes/models.py
index 78539d7..550e65c 100644
--- a/karmaworld/apps/notes/models.py
+++ b/karmaworld/apps/notes/models.py
@@ -219,8 +219,16 @@ class Note(Document):
 
 
 def update_note_counts(note_instance):
-    note_instance.course.update_note_count()
-    note_instance.course.school.update_note_count()
+    try:
+        # test if the course still exists, or if this is a cascade delete.
+        note_instance.course
+    except Couse.DoesNotExist:
+        # this is a cascade delete. there is no course to update
+        pass
+    else:
+        # course exists
+        note_instance.course.update_note_count()
+        note_instance.course.school.update_note_count()
 
 @receiver(post_save, sender=Note, weak=False)
 def note_save_receiver(sender, **kwargs):