Add guards against very old meetings. For more modern, past, meetings, add a warning that these are not the official proceedings and provide a link to the official proceedings.

- Legacy-Id: 11757

ietf/meeting/views.py

@@ -1446,6 +1446,10 @@ def floor_plan(request, num=None, floor=None, ):
 def proceedings(request, num=None):
 
     meeting = get_meeting(num)
+
+    if meeting.number <= 64 or not meeting.agenda.assignments.exists():
+            return HttpResponseRedirect( 'https://www.ietf.org/proceedings/%s' % num )
+
     begin_date = meeting.get_submission_start_date()
     cut_off_date = meeting.get_submission_cut_off_date()
     cor_cut_off_date = meeting.get_submission_correction_date()

ietf/templates/meeting/proceedings.html

@@ -22,6 +22,11 @@
       <p class="alert alert-info">
           <b>This page is under construction</b> 	
       </p>
+      {% if meeting_num|add:0 <= 96 %}
+        <p class="alert alert-info">
+           <b>These are not the official proceedings for IETF{{meeting_num}}. This page shows what would be generated by the new automatic proceedings generator for that meeting. The official proceedings are located at <a href="https://www.ietf.org/proceedings/{{meeting_num}}">https://www.ietf.org/proceedings/{{meeting_num}}</a></b>
+        </p>
+      {% endif %}
 
       {# cache for 15 minutes, as long as there's no proceedings activity. takes 4-8 seconds to generate. #}
       {% load cache %}