Fix bug in materials page introduced in previous commit with non-WG groups

- Legacy-Id: 17124

ietf/meeting/models.py

@@ -940,6 +940,10 @@ class Session(models.Model):
     def drafts(self):
         return list(self.materials.filter(type='draft'))
 
+    # The utilities below are used in the proceedings and materials
+    # templates, and should be moved there - then we could also query
+    # out the needed information in a few passes and speed up those
+    # pages.
     def all_meeting_sessions_for_group(self):
         from ietf.meeting.utils import add_event_info_to_session_qs
         if self.group.type_id in ['wg','rg','ag']:

ietf/meeting/views.py

@@ -138,10 +138,10 @@ def materials(request, num=None):
 
     schedule = get_schedule(meeting, None)
 
-    sessions  = Session.objects.filter(
+    sessions  = add_event_info_to_session_qs(Session.objects.filter(
         meeting__number=meeting.number,
         timeslotassignments__schedule=schedule
-    ).distinct().select_related('meeting__schedule', 'group__state', 'group__parent')
+    ).distinct().select_related('meeting__schedule', 'group__state', 'group__parent'))
 
     plenaries = sessions.filter(name__icontains='plenary')
     ietf      = sessions.filter(group__parent__type__slug = 'area').exclude(group__acronym='edu')