Only show sessions from the traditional week in the "week view" used …

…for customized calendars. Partially addresses #3022 until a more general solution can be constructed.

 - Legacy-Id: 18185

ietf/meeting/views.py

@@ -1198,6 +1198,12 @@ def week_view(request, num=None, name=None, owner=None):
         raise Http404
 
     filtered_assignments = schedule.assignments.exclude(timeslot__type__in=['lead','offagenda'])
+    # Only show assignments from the traditional meeting "week" (Sat-Fri). 
+    # We'll determine this using the saturday before the first scheduled regular session.
+    first_regular_session_time = meeting.schedule.qs_assignments_with_sessions.filter(session__type_id='regular').order_by('timeslot__time').first().timeslot.time
+    saturday_before = first_regular_session_time - datetime.timedelta(days=(first_regular_session_time.weekday() - 5)%7)
+    saturday_after = saturday_before + datetime.timedelta(days=7)
+    filtered_assignments = filtered_assignments.filter(timeslot__time__gte=saturday_before,timeslot__time__lt=saturday_after)
     filtered_assignments = preprocess_assignments_for_agenda(filtered_assignments, meeting)
 
     items = []