Merged in [17466] from rcross@amsl.com:

Add migration to cancel 107 sessions
 - Legacy-Id: 17501
Note: SVN reference [17466] has been migrated to Git commit 931c5ce6cd

ietf/meeting/migrations/0026_cancel_107_sessions.py

@@ -0,0 +1,40 @@
+# Copyright The IETF Trust 2020, All Rights Reserved
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.29 on 2020-03-18 16:18
+from __future__ import unicode_literals
+
+from django.db import migrations
+
+
+def cancel_sessions(apps, schema_editor):
+    Session = apps.get_model('meeting', 'Session')
+    SchedulingEvent = apps.get_model('meeting', 'SchedulingEvent')
+    SessionStatusName = apps.get_model('name', 'SessionStatusName')
+    Person = apps.get_model('person', 'Person')
+    excludes = ['txauth','dispatch','add','raw','masque','wpack','drip','gendispatch','privacypass', 'ript', 'secdispatch', 'webtrans']
+    canceled = SessionStatusName.objects.get(slug='canceled')
+    person = Person.objects.get(name='Ryan Cross')
+    sessions = Session.objects.filter(meeting__number=107,group__type__in=['wg','rg','ag']).exclude(group__acronym__in=excludes)
+    for session in sessions:
+        SchedulingEvent.objects.create(
+            session = session,
+            status = canceled,
+            by = person)
+
+
+def reverse(apps, schema_editor):
+    SchedulingEvent = apps.get_model('meeting', 'SchedulingEvent')
+    Person = apps.get_model('person', 'Person')
+    person = Person.objects.get(name='Ryan Cross')
+    SchedulingEvent.objects.filter(meeting__number=107, by=person).delete()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('meeting', '0025_rename_type_session_to_regular'),
+    ]
+
+    operations = [
+        migrations.RunPython(cancel_sessions, reverse),
+    ]