Fix parameter validations in meeting.views.ajax_get_utc(). Fixes 2023. Also fix pyflakes error. Commit ready for merge

- Legacy-Id: 12334

ietf/meeting/tests_views.py

@@ -1290,6 +1290,11 @@ class AjaxTests(TestCase):
         self.assertEqual(r.status_code, 200)
         data = json.loads(r.content)
         self.assertEqual(data["error"], True)
+        url = urlreverse('ietf.meeting.views.ajax_get_utc') + "?date=2016-1-1&time=10:00am&timezone=UTC"
+        r = self.client.get(url)
+        self.assertEqual(r.status_code, 200)
+        data = json.loads(r.content)
+        self.assertEqual(data["error"], True)
         # test good query
         url = urlreverse('ietf.meeting.views.ajax_get_utc') + "?date=2016-1-1&time=12:00&timezone=US/Pacific"
         r = self.client.get(url)

ietf/meeting/views.py

@@ -1603,7 +1603,7 @@ def ajax_get_utc(request):
     time = request.GET.get('time')
     timezone = request.GET.get('timezone')
     date = request.GET.get('date')
-    time_re = re.compile(r'^\d{2}:\d{2}')
+    time_re = re.compile(r'^\d{2}:\d{2}$')
     # validate input
     if not time_re.match(time) or not date:
         return HttpResponse(json.dumps({'error': True}),
@@ -1676,7 +1676,6 @@ def interim_skip_announcement(request, number):
     first announcing.  Only applicable to IRTF groups.
     '''
     meeting = get_object_or_404(Meeting, number=number)
-    group = meeting.session_set.first().group
 
     if request.method == 'POST':
         meeting.session_set.update(status_id='sched')