Massively reduce query count in scheduler

AKScheduling/templates/admin/AKScheduling/scheduling.html

@@ -356,8 +356,10 @@
                     {% endif %}
                     {% for slot in track_slots.list %}
                         <div class="unscheduled-slot badge" style='background-color: {{ slot.ak.category.color }}'
-                             data-event='{ "title": "{{ slot.ak.short_name }}", "duration": {"hours": "{{ slot.duration|unlocalize }}"}, "constraint": "roomAvailable", "description": "{{ slot.ak.details | escapejs }}", "slotID": "{{ slot.pk }}", "backgroundColor": "{{ slot.ak.category.color }}", "url": "{% url "admin:AKModel_akslot_change" slot.pk %}"}' data-details="{{ slot.ak.details }}">{{ slot.ak.short_name }}
+                             {% with slot.ak.details as details %}
+                             data-event='{ "title": "{{ slot.ak.short_name }}", "duration": {"hours": "{{ slot.duration|unlocalize }}"}, "constraint": "roomAvailable", "description": "{{ details | escapejs }}", "slotID": "{{ slot.pk }}", "backgroundColor": "{{ slot.ak.category.color }}", "url": "{% url "admin:AKModel_akslot_change" slot.pk %}"}' data-details="{{ details }}">{{ slot.ak.short_name }}
                             ({{ slot.duration }} h)<br>{{ slot.ak.owners_list }}
+                            {% endwith %}
                         </div>
                     {% endfor %}
                 {% endfor %}

AKScheduling/views.py

@@ -41,7 +41,7 @@ class SchedulingAdminView(AdminViewMixin, FilterByEventSlugMixin, ListView):
     context_object_name = "slots_unscheduled"
 
     def get_queryset(self):
-        return super().get_queryset().filter(start__isnull=True).select_related('event', 'ak').order_by('ak__track', 'ak')
+        return super().get_queryset().filter(start__isnull=True).select_related('event', 'ak', 'ak__track', 'ak__category').prefetch_related('ak__types', 'ak__owners', 'ak__conflicts', 'ak__prerequisites', 'ak__requirements').order_by('ak__track', 'ak')
 
     def get_context_data(self, *, object_list=None, **kwargs):
         context = super().get_context_data(object_list=object_list, **kwargs)