From 8aa23c71565a536bdb4c9188cd960ba14d3ee087 Mon Sep 17 00:00:00 2001
From: Damien Elmes <git@ichi2.net>
Date: Sat, 10 Nov 2012 12:55:11 +0900
Subject: [PATCH] be tolerant of missing models when updating field cache

---
 anki/collection.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/anki/collection.py b/anki/collection.py
index ae46fe3dd..bd2df13e1 100644
--- a/anki/collection.py
+++ b/anki/collection.py
@@ -445,6 +445,9 @@ where c.nid = n.id and c.id in %s group by nid""" % ids2str(cids)):
         for (nid, mid, flds) in self._fieldData(snids):
             fields = splitFields(flds)
             model = self.models.get(mid)
+            if not model:
+                # note points to invalid model
+                continue
             r.append((stripHTML(fields[self.models.sortIdx(model)]),
                       fieldChecksum(fields[0]),
                       nid))