Guard against null timeslot location in agenda.html and add test of location_anchor tag

- Legacy-Id: 19665

ietf/meeting/factories.py

@@ -179,7 +179,8 @@ class TimeSlotFactory(factory.django.DjangoModelFactory):
     def location(obj, create, extracted, **kwargs): # pylint: disable=no-self-argument
         if create:
             if extracted:
-                obj.location = extracted
+                # accept the string "none" to set location to null
+                obj.location = None if extracted == 'none' else extracted
             else:
                 obj.location = RoomFactory(meeting=obj.meeting)
             obj.save()

ietf/meeting/templatetags/tests.py

@@ -1,6 +1,9 @@
 # Copyright The IETF Trust 2009-2020, All Rights Reserved
 # -*- coding: utf-8 -*-
 
+from django.template import Context, Template
+
+from ietf.meeting.factories import TimeSlotFactory
 from ietf.meeting.templatetags.agenda_custom_tags import AnchorNode
 from ietf.utils.test_utils import TestCase
 
@@ -18,3 +21,23 @@ class AgendaCustomTagsTests(TestCase):
                 self.fail(f'{subclass.__name__} must implement resolve_url() method')
             except:
                 pass  # any other failure ok since we used garbage inputs
+
+    def test_location_anchor_node(self):
+        context = Context({
+            'no_location': TimeSlotFactory(location='none'),
+            'no_show_location': TimeSlotFactory(show_location=False),
+            'show_location': TimeSlotFactory(location__name='My Location'),
+        })
+        template = Template("""
+            {% load agenda_custom_tags %}
+            <span>{% location_anchor no_location %}no_location{% end_location_anchor %}</span>
+            <span>{% location_anchor no_show_location %}no_show_location{% end_location_anchor %}</span>
+            <span>{% location_anchor show_location %}show_location{% end_location_anchor %}</span>
+        """)
+        result = template.render(context)
+        self.assertInHTML('<span>no_location</span>', result)
+        self.assertInHTML('<span>no_show_location</span>', result)
+        self.assertInHTML(
+            f'<span><a href="{context["show_location"].location.floorplan_url()}">show_location</a></span>',
+            result,
+        )

ietf/templates/meeting/agenda.html

@@ -157,9 +157,9 @@
                         <div class="hidden-sm hidden-md hidden-lg">
                            {% include "meeting/timeslot_start_end.html" %}
                         </div>
-                        {% location_anchor item.timeslot %}
+                        {% if item.timeslot.show_location and item.timeslot.location %}{% location_anchor item.timeslot %}
                           {{ item.timeslot.get_html_location }}
-                        {% end_location_anchor %}
+                        {% end_location_anchor %}{% endif %}
                         {% if item.timeslot.show_location and item.timeslot.get_html_location %}
                           {% with item.timeslot.location.floorplan as floor %}
                             {% if item.timeslot.location.floorplan %}
@@ -238,9 +238,9 @@
                       <div class="hidden-sm hidden-md hidden-lg">
                          {% include "meeting/timeslot_start_end.html" %}
                       </div>
-          {% location_anchor item.timeslot %}
+          {% if item.timeslot.show_location and item.timeslot.location %}{% location_anchor item.timeslot %}
             {{ item.timeslot.get_html_location }}
-          {% end_location_anchor %}
+          {% end_location_anchor %}{% endif %}
         </td>
 
 		  {% else %}
@@ -255,9 +255,9 @@
 		      {% endwith %}
 		    </td>
                     <td>
-                      {% location_anchor item.timeslot %}
+                      {% if item.timeslot.show_location and item.timeslot.location %}{% location_anchor item.timeslot %}
                         {{ item.timeslot.get_html_location }}
-                      {% end_location_anchor %}
+                      {% end_location_anchor %}{% endif %}
                     </td>
 
 		      <td><div class="hidden-xs">{{item.session.historic_group.historic_parent.acronym}}</div></td>