Look at all scheduled sessions for a group when deciding to display a cancelled banner. Fixes ietf-tools#2764. Commit ready for merge.

 - Legacy-Id: 16604

Author: rjsparks

ietf/meeting/models.py

@@ -968,6 +968,10 @@ def all_meeting_sessions_for_group(self):
         else:
             return [self]
 
+    def all_meeting_sessions_cancelled(self):
+        states = set([s.status_id for s in self.all_meeting_sessions_for_group()])
+        return 'canceled' in states and len(states) == 1
+
     def all_meeting_recordings(self):
         recordings = [] # These are not sets because we need to preserve relative ordering or redo the ordering work later
         sessions = self.all_meeting_sessions_for_group()

ietf/templates/meeting/group_materials.html

@@ -18,7 +18,7 @@
     {% endif %}
   </td>
 
-  {% if session.status_id == 'canceled' %}
+  {% if session.all_meeting_sessions_cancelled %}
     {% if user|has_role:"Secretariat" or user_groups %}
       <td colspan="6"><span class="label label-danger">Session cancelled</span></td>
     {% else %}

ietf/templates/meeting/group_proceedings.html

@@ -18,7 +18,7 @@
     {% endif %}
   </td>
 
-  {% if session.status_id == 'canceled' %}
+  {% if session.all_meeting_sessions_cancelled %}
     <td colspan="3"><span class="label label-danger">Session cancelled</span></td>
   {% else %}
     <td>