From fe10b882b74479b6d139039956932b98629c8165 Mon Sep 17 00:00:00 2001
From: David Baker <dbkr@matrix.org>
Date: Fri, 30 Jan 2015 23:05:49 +0000
Subject: [PATCH] Don't assume all member events have a display nme.

---
 synapse/push/__init__.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/synapse/push/__init__.py b/synapse/push/__init__.py
index 6a302305fb..75867b3c3c 100644
--- a/synapse/push/__init__.py
+++ b/synapse/push/__init__.py
@@ -204,10 +204,11 @@ class Pusher(object):
             event_type='m.room.member',
             state_key=ev['user_id']
         )
-        if len(their_member_events_for_room) > 0:
-            dn = their_member_events_for_room[0].content['displayname']
-            if dn is not None:
-                ctx['sender_display_name'] = dn
+        for mev in their_member_events_for_room:
+            if mev.content['membership'] == 'join' and 'displayname' in mev.content:
+                dn = mev.content['displayname']
+                if dn is not None:
+                    ctx['sender_display_name'] = dn
 
         defer.returnValue(ctx)
 
-- 
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