Merge pull request #5355 from matrix-org/babolivier/heroes_left_members

Include left members in room summaries' heroes

changelog.d/5355.bugfix

@@ -0,0 +1 @@
+Include left members in room summaries' heroes.

synapse/handlers/sync.py

@@ -598,15 +598,28 @@ class SyncHandler(object):
             if canonical_alias and canonical_alias.content:
                 defer.returnValue(summary)
 
+        me = sync_config.user.to_string()
+
         joined_user_ids = [
-            r[0] for r in details.get(Membership.JOIN, empty_ms).members
+            r[0]
+            for r in details.get(Membership.JOIN, empty_ms).members
+            if r[0] != me
         ]
         invited_user_ids = [
-            r[0] for r in details.get(Membership.INVITE, empty_ms).members
+            r[0]
+            for r in details.get(Membership.INVITE, empty_ms).members
+            if r[0] != me
         ]
         gone_user_ids = (
-            [r[0] for r in details.get(Membership.LEAVE, empty_ms).members] +
+            [
-            [r[0] for r in details.get(Membership.BAN, empty_ms).members]
+                r[0]
+                for r in details.get(Membership.LEAVE, empty_ms).members
+                if r[0] != me
+            ] + [
+                r[0]
+                for r in details.get(Membership.BAN, empty_ms).members
+                if r[0] != me
+            ]
         )
 
         # FIXME: only build up a member_ids list for our heroes
@@ -621,22 +634,13 @@ class SyncHandler(object):
                 member_ids[user_id] = event_id
 
         # FIXME: order by stream ordering rather than as returned by SQL
-        me = sync_config.user.to_string()
         if (joined_user_ids or invited_user_ids):
             summary['m.heroes'] = sorted(
-                [
+                [user_id for user_id in (joined_user_ids + invited_user_ids)]
-                    user_id
-                    for user_id in (joined_user_ids + invited_user_ids)
-                    if user_id != me
-                ]
             )[0:5]
         else:
             summary['m.heroes'] = sorted(
-                [
+                [user_id for user_id in gone_user_ids]
-                    user_id
-                    for user_id in gone_user_ids
-                    if user_id != me
-                ]
             )[0:5]
 
         if not sync_config.filter_collection.lazy_load_members():