Optimized performance when editing/deleting objects in bulk

netbox/circuits/views.py

@@ -117,6 +117,7 @@ class CircuitTypeEditView(CircuitTypeCreateView):
 class CircuitTypeBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'circuits.delete_circuittype'
     cls = CircuitType
+    queryset = CircuitType.objects.annotate(circuit_count=Count('circuits'))
     table = tables.CircuitTypeTable
     default_return_url = 'circuits:circuittype_list'
 
@@ -184,6 +185,7 @@ class CircuitBulkImportView(PermissionRequiredMixin, BulkImportView):
 class CircuitBulkEditView(PermissionRequiredMixin, BulkEditView):
     permission_required = 'circuits.change_circuit'
     cls = Circuit
+    queryset = Circuit.objects.select_related('provider', 'type', 'tenant').prefetch_related('terminations__site')
     filter = filters.CircuitFilter
     table = tables.CircuitTable
     form = forms.CircuitBulkEditForm
@@ -193,6 +195,7 @@ class CircuitBulkEditView(PermissionRequiredMixin, BulkEditView):
 class CircuitBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'circuits.delete_circuit'
     cls = Circuit
+    queryset = Circuit.objects.select_related('provider', 'type', 'tenant').prefetch_related('terminations__site')
     filter = filters.CircuitFilter
     table = tables.CircuitTable
     default_return_url = 'circuits:circuit_list'

netbox/dcim/tables.py

@@ -285,19 +285,10 @@ class DeviceTypeTable(BaseTable):
     is_pdu = tables.BooleanColumn(verbose_name='PDU')
     is_network_device = tables.BooleanColumn(verbose_name='Net')
     subdevice_role = tables.TemplateColumn(SUBDEVICE_ROLE_TEMPLATE, verbose_name='Subdevice Role')
+    instance_count = tables.Column(verbose_name='Instances')
 
     class Meta(BaseTable.Meta):
         model = DeviceType
-        fields = (
-            'pk', 'model', 'manufacturer', 'part_number', 'u_height', 'is_full_depth', 'is_console_server', 'is_pdu',
-            'is_network_device', 'subdevice_role',
-        )
-
-
-class DeviceTypeDetailTable(DeviceTypeTable):
-    instance_count = tables.Column(verbose_name='Instances')
-
-    class Meta(DeviceTypeTable.Meta):
         fields = (
             'pk', 'model', 'manufacturer', 'part_number', 'u_height', 'is_full_depth', 'is_console_server', 'is_pdu',
             'is_network_device', 'subdevice_role', 'instance_count',
@@ -315,7 +306,6 @@ class ConsolePortTemplateTable(BaseTable):
         model = ConsolePortTemplate
         fields = ('pk', 'name')
         empty_text = "None"
-        show_header = False
 
 
 class ConsoleServerPortTemplateTable(BaseTable):
@@ -325,7 +315,6 @@ class ConsoleServerPortTemplateTable(BaseTable):
         model = ConsoleServerPortTemplate
         fields = ('pk', 'name')
         empty_text = "None"
-        show_header = False
 
 
 class PowerPortTemplateTable(BaseTable):
@@ -335,7 +324,6 @@ class PowerPortTemplateTable(BaseTable):
         model = PowerPortTemplate
         fields = ('pk', 'name')
         empty_text = "None"
-        show_header = False
 
 
 class PowerOutletTemplateTable(BaseTable):
@@ -345,7 +333,6 @@ class PowerOutletTemplateTable(BaseTable):
         model = PowerOutletTemplate
         fields = ('pk', 'name')
         empty_text = "None"
-        show_header = False
 
 
 class InterfaceTemplateTable(BaseTable):
@@ -356,7 +343,6 @@ class InterfaceTemplateTable(BaseTable):
         model = InterfaceTemplate
         fields = ('pk', 'name', 'mgmt_only', 'form_factor')
         empty_text = "None"
-        show_header = False
 
 
 class DeviceBayTemplateTable(BaseTable):
@@ -366,7 +352,6 @@ class DeviceBayTemplateTable(BaseTable):
         model = DeviceBayTemplate
         fields = ('pk', 'name')
         empty_text = "None"
-        show_header = False
 
 
 #

netbox/dcim/views.py

@@ -205,6 +205,7 @@ class RegionEditView(RegionCreateView):
 class RegionBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'dcim.delete_region'
     cls = Region
+    queryset = Region.objects.annotate(site_count=Count('sites'))
     table = tables.RegionTable
     default_return_url = 'dcim:region_list'
 
@@ -274,6 +275,7 @@ class SiteBulkImportView(PermissionRequiredMixin, BulkImportView):
 class SiteBulkEditView(PermissionRequiredMixin, BulkEditView):
     permission_required = 'dcim.change_site'
     cls = Site
+    queryset = Site.objects.select_related('region', 'tenant')
     filter = filters.SiteFilter
     table = tables.SiteTable
     form = forms.SiteBulkEditForm
@@ -308,6 +310,7 @@ class RackGroupEditView(RackGroupCreateView):
 class RackGroupBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'dcim.delete_rackgroup'
     cls = RackGroup
+    queryset = RackGroup.objects.select_related('site').annotate(rack_count=Count('racks'))
     filter = filters.RackGroupFilter
     table = tables.RackGroupTable
     default_return_url = 'dcim:rackgroup_list'
@@ -339,6 +342,7 @@ class RackRoleEditView(RackRoleCreateView):
 class RackRoleBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'dcim.delete_rackrole'
     cls = RackRole
+    queryset = RackRole.objects.annotate(rack_count=Count('racks'))
     table = tables.RackRoleTable
     default_return_url = 'dcim:rackrole_list'
 
@@ -458,6 +462,7 @@ class RackBulkImportView(PermissionRequiredMixin, BulkImportView):
 class RackBulkEditView(PermissionRequiredMixin, BulkEditView):
     permission_required = 'dcim.change_rack'
     cls = Rack
+    queryset = Rack.objects.select_related('site', 'group', 'tenant', 'role')
     filter = filters.RackFilter
     table = tables.RackTable
     form = forms.RackBulkEditForm
@@ -467,6 +472,7 @@ class RackBulkEditView(PermissionRequiredMixin, BulkEditView):
 class RackBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'dcim.delete_rack'
     cls = Rack
+    queryset = Rack.objects.select_related('site', 'group', 'tenant', 'role')
     filter = filters.RackFilter
     table = tables.RackTable
     default_return_url = 'dcim:rack_list'
@@ -544,6 +550,7 @@ class ManufacturerEditView(ManufacturerCreateView):
 class ManufacturerBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'dcim.delete_manufacturer'
     cls = Manufacturer
+    queryset = Manufacturer.objects.annotate(devicetype_count=Count('device_types'))
     table = tables.ManufacturerTable
     default_return_url = 'dcim:manufacturer_list'
 
@@ -556,7 +563,7 @@ class DeviceTypeListView(ObjectListView):
     queryset = DeviceType.objects.select_related('manufacturer').annotate(instance_count=Count('instances'))
     filter = filters.DeviceTypeFilter
     filter_form = forms.DeviceTypeFilterForm
-    table = tables.DeviceTypeDetailTable
+    table = tables.DeviceTypeTable
     template_name = 'dcim/devicetype_list.html'
 
 
@@ -568,24 +575,30 @@ class DeviceTypeView(View):
 
         # Component tables
         consoleport_table = tables.ConsolePortTemplateTable(
-            natsorted(ConsolePortTemplate.objects.filter(device_type=devicetype), key=attrgetter('name'))
+            natsorted(ConsolePortTemplate.objects.filter(device_type=devicetype), key=attrgetter('name')),
+            show_header=False
         )
         consoleserverport_table = tables.ConsoleServerPortTemplateTable(
-            natsorted(ConsoleServerPortTemplate.objects.filter(device_type=devicetype), key=attrgetter('name'))
+            natsorted(ConsoleServerPortTemplate.objects.filter(device_type=devicetype), key=attrgetter('name')),
+            show_header=False
         )
         powerport_table = tables.PowerPortTemplateTable(
-            natsorted(PowerPortTemplate.objects.filter(device_type=devicetype), key=attrgetter('name'))
+            natsorted(PowerPortTemplate.objects.filter(device_type=devicetype), key=attrgetter('name')),
+            show_header=False
         )
         poweroutlet_table = tables.PowerOutletTemplateTable(
-            natsorted(PowerOutletTemplate.objects.filter(device_type=devicetype), key=attrgetter('name'))
+            natsorted(PowerOutletTemplate.objects.filter(device_type=devicetype), key=attrgetter('name')),
+            show_header=False
         )
         interface_table = tables.InterfaceTemplateTable(
             list(InterfaceTemplate.objects.order_naturally(
                 devicetype.interface_ordering
-            ).filter(device_type=devicetype))
+            ).filter(device_type=devicetype)),
+            show_header=False
         )
         devicebay_table = tables.DeviceBayTemplateTable(
-            natsorted(DeviceBayTemplate.objects.filter(device_type=devicetype), key=attrgetter('name'))
+            natsorted(DeviceBayTemplate.objects.filter(device_type=devicetype), key=attrgetter('name')),
+            show_header=False
         )
         if request.user.has_perm('dcim.change_devicetype'):
             consoleport_table.base_columns['pk'].visible = True
@@ -627,6 +640,7 @@ class DeviceTypeDeleteView(PermissionRequiredMixin, ObjectDeleteView):
 class DeviceTypeBulkEditView(PermissionRequiredMixin, BulkEditView):
     permission_required = 'dcim.change_devicetype'
     cls = DeviceType
+    queryset = DeviceType.objects.select_related('manufacturer').annotate(instance_count=Count('instances'))
     filter = filters.DeviceTypeFilter
     table = tables.DeviceTypeTable
     form = forms.DeviceTypeBulkEditForm
@@ -636,6 +650,7 @@ class DeviceTypeBulkEditView(PermissionRequiredMixin, BulkEditView):
 class DeviceTypeBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'dcim.delete_devicetype'
     cls = DeviceType
+    queryset = DeviceType.objects.select_related('manufacturer').annotate(instance_count=Count('instances'))
     filter = filters.DeviceTypeFilter
     table = tables.DeviceTypeTable
     default_return_url = 'dcim:devicetype_list'
@@ -777,6 +792,7 @@ class DeviceRoleEditView(DeviceRoleCreateView):
 class DeviceRoleBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'dcim.delete_devicerole'
     cls = DeviceRole
+    queryset = DeviceRole.objects.annotate(device_count=Count('devices'))
     table = tables.DeviceRoleTable
     default_return_url = 'dcim:devicerole_list'
 
@@ -807,6 +823,7 @@ class PlatformEditView(PlatformCreateView):
 class PlatformBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'dcim.delete_platform'
     cls = Platform
+    queryset = Platform.objects.annotate(device_count=Count('devices'))
     table = tables.PlatformTable
     default_return_url = 'dcim:platform_list'
 
@@ -971,6 +988,7 @@ class ChildDeviceBulkImportView(PermissionRequiredMixin, BulkImportView):
 class DeviceBulkEditView(PermissionRequiredMixin, BulkEditView):
     permission_required = 'dcim.change_device'
     cls = Device
+    queryset = Device.objects.select_related('tenant', 'site', 'rack', 'device_role', 'device_type__manufacturer')
     filter = filters.DeviceFilter
     table = tables.DeviceTable
     form = forms.DeviceBulkEditForm
@@ -980,6 +998,7 @@ class DeviceBulkEditView(PermissionRequiredMixin, BulkEditView):
 class DeviceBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'dcim.delete_device'
     cls = Device
+    queryset = Device.objects.select_related('tenant', 'site', 'rack', 'device_role', 'device_type__manufacturer')
     filter = filters.DeviceFilter
     table = tables.DeviceTable
     default_return_url = 'dcim:device_list'

netbox/ipam/tables.py

@@ -161,6 +161,14 @@ class RIRTable(BaseTable):
     name = tables.LinkColumn(verbose_name='Name')
     is_private = tables.BooleanColumn(verbose_name='Private')
     aggregate_count = tables.Column(verbose_name='Aggregates')
+    actions = tables.TemplateColumn(template_code=RIR_ACTIONS, attrs={'td': {'class': 'text-right'}}, verbose_name='')
+
+    class Meta(BaseTable.Meta):
+        model = RIR
+        fields = ('pk', 'name', 'is_private', 'aggregate_count', 'actions')
+
+
+class RIRDetailTable(RIRTable):
     stats_total = tables.Column(accessor='stats.total', verbose_name='Total',
                                 footer=lambda table: sum(r.stats['total'] for r in table.data))
     stats_active = tables.Column(accessor='stats.active', verbose_name='Active',
@@ -172,12 +180,12 @@ class RIRTable(BaseTable):
     stats_available = tables.Column(accessor='stats.available', verbose_name='Available',
                                     footer=lambda table: sum(r.stats['available'] for r in table.data))
     utilization = tables.TemplateColumn(template_code=RIR_UTILIZATION, verbose_name='Utilization')
-    actions = tables.TemplateColumn(template_code=RIR_ACTIONS, attrs={'td': {'class': 'text-right'}}, verbose_name='')
 
-    class Meta(BaseTable.Meta):
+    class Meta(RIRTable.Meta):
-        model = RIR
+        fields = (
-        fields = ('pk', 'name', 'is_private', 'aggregate_count', 'stats_total', 'stats_active', 'stats_reserved',
+            'pk', 'name', 'is_private', 'aggregate_count', 'stats_total', 'stats_active', 'stats_reserved',
-                  'stats_deprecated', 'stats_available', 'utilization', 'actions')
+            'stats_deprecated', 'stats_available', 'utilization', 'actions',
+        )
 
 
 #

netbox/ipam/views.py

@@ -142,6 +142,7 @@ class VRFBulkImportView(PermissionRequiredMixin, BulkImportView):
 class VRFBulkEditView(PermissionRequiredMixin, BulkEditView):
     permission_required = 'ipam.change_vrf'
     cls = VRF
+    queryset = VRF.objects.select_related('tenant')
     filter = filters.VRFFilter
     table = tables.VRFTable
     form = forms.VRFBulkEditForm
@@ -151,7 +152,9 @@ class VRFBulkEditView(PermissionRequiredMixin, BulkEditView):
 class VRFBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'ipam.delete_vrf'
     cls = VRF
+    queryset = VRF.objects.select_related('tenant')
     filter = filters.VRFFilter
+    table = tables.VRFTable
     default_return_url = 'ipam:vrf_list'
 
 
@@ -163,7 +166,7 @@ class RIRListView(ObjectListView):
     queryset = RIR.objects.annotate(aggregate_count=Count('aggregates'))
     filter = filters.RIRFilter
     filter_form = forms.RIRFilterForm
-    table = tables.RIRTable
+    table = tables.RIRDetailTable
     template_name = 'ipam/rir_list.html'
 
     def alter_queryset(self, request):
@@ -259,7 +262,9 @@ class RIREditView(RIRCreateView):
 class RIRBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'ipam.delete_rir'
     cls = RIR
+    queryset = RIR.objects.annotate(aggregate_count=Count('aggregates'))
     filter = filters.RIRFilter
+    table = tables.RIRTable
     default_return_url = 'ipam:rir_list'
 
 
@@ -360,6 +365,7 @@ class AggregateBulkImportView(PermissionRequiredMixin, BulkImportView):
 class AggregateBulkEditView(PermissionRequiredMixin, BulkEditView):
     permission_required = 'ipam.change_aggregate'
     cls = Aggregate
+    queryset = Aggregate.objects.select_related('rir')
     filter = filters.AggregateFilter
     table = tables.AggregateTable
     form = forms.AggregateBulkEditForm
@@ -369,7 +375,9 @@ class AggregateBulkEditView(PermissionRequiredMixin, BulkEditView):
 class AggregateBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'ipam.delete_aggregate'
     cls = Aggregate
+    queryset = Aggregate.objects.select_related('rir')
     filter = filters.AggregateFilter
+    table = tables.AggregateTable
     default_return_url = 'ipam:aggregate_list'
 
 
@@ -399,6 +407,7 @@ class RoleEditView(RoleCreateView):
 class RoleBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'ipam.delete_role'
     cls = Role
+    table = tables.RoleTable
     default_return_url = 'ipam:role_list'
 
 
@@ -564,6 +573,7 @@ class PrefixBulkImportView(PermissionRequiredMixin, BulkImportView):
 class PrefixBulkEditView(PermissionRequiredMixin, BulkEditView):
     permission_required = 'ipam.change_prefix'
     cls = Prefix
+    queryset = Prefix.objects.select_related('site', 'vrf__tenant', 'tenant', 'vlan', 'role')
     filter = filters.PrefixFilter
     table = tables.PrefixTable
     form = forms.PrefixBulkEditForm
@@ -573,7 +583,9 @@ class PrefixBulkEditView(PermissionRequiredMixin, BulkEditView):
 class PrefixBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'ipam.delete_prefix'
     cls = Prefix
+    queryset = Prefix.objects.select_related('site', 'vrf__tenant', 'tenant', 'vlan', 'role')
     filter = filters.PrefixFilter
+    table = tables.PrefixTable
     default_return_url = 'ipam:prefix_list'
 
 
@@ -669,6 +681,7 @@ class IPAddressBulkImportView(PermissionRequiredMixin, BulkImportView):
 class IPAddressBulkEditView(PermissionRequiredMixin, BulkEditView):
     permission_required = 'ipam.change_ipaddress'
     cls = IPAddress
+    queryset = IPAddress.objects.select_related('vrf__tenant', 'tenant', 'interface__device')
     filter = filters.IPAddressFilter
     table = tables.IPAddressTable
     form = forms.IPAddressBulkEditForm
@@ -678,7 +691,9 @@ class IPAddressBulkEditView(PermissionRequiredMixin, BulkEditView):
 class IPAddressBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'ipam.delete_ipaddress'
     cls = IPAddress
+    queryset = IPAddress.objects.select_related('vrf__tenant', 'tenant', 'interface__device')
     filter = filters.IPAddressFilter
+    table = tables.IPAddressTable
     default_return_url = 'ipam:ipaddress_list'
 
 
@@ -710,7 +725,9 @@ class VLANGroupEditView(VLANGroupCreateView):
 class VLANGroupBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'ipam.delete_vlangroup'
     cls = VLANGroup
+    queryset = VLANGroup.objects.select_related('site').annotate(vlan_count=Count('vlans'))
     filter = filters.VLANGroupFilter
+    table = tables.VLANGroupTable
     default_return_url = 'ipam:vlangroup_list'
 
 
@@ -771,6 +788,7 @@ class VLANBulkImportView(PermissionRequiredMixin, BulkImportView):
 class VLANBulkEditView(PermissionRequiredMixin, BulkEditView):
     permission_required = 'ipam.change_vlan'
     cls = VLAN
+    queryset = VLAN.objects.select_related('site', 'group', 'tenant', 'role')
     filter = filters.VLANFilter
     table = tables.VLANTable
     form = forms.VLANBulkEditForm
@@ -780,7 +798,9 @@ class VLANBulkEditView(PermissionRequiredMixin, BulkEditView):
 class VLANBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'ipam.delete_vlan'
     cls = VLAN
+    queryset = VLAN.objects.select_related('site', 'group', 'tenant', 'role')
     filter = filters.VLANFilter
+    table = tables.VLANTable
     default_return_url = 'ipam:vlan_list'
 
 

netbox/secrets/views.py

@@ -55,6 +55,8 @@ class SecretRoleEditView(SecretRoleCreateView):
 class SecretRoleBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'secrets.delete_secretrole'
     cls = SecretRole
+    queryset = SecretRole.objects.annotate(secret_count=Count('secrets'))
+    table = tables.SecretRoleTable
     default_return_url = 'secrets:secretrole_list'
 
 
@@ -239,6 +241,7 @@ class SecretBulkImportView(BulkImportView):
 class SecretBulkEditView(PermissionRequiredMixin, BulkEditView):
     permission_required = 'secrets.change_secret'
     cls = Secret
+    queryset = Secret.objects.select_related('role', 'device')
     filter = filters.SecretFilter
     table = tables.SecretTable
     form = forms.SecretBulkEditForm
@@ -248,5 +251,7 @@ class SecretBulkEditView(PermissionRequiredMixin, BulkEditView):
 class SecretBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'secrets.delete_secret'
     cls = Secret
+    queryset = Secret.objects.select_related('role', 'device')
     filter = filters.SecretFilter
+    table = tables.SecretTable
     default_return_url = 'secrets:secret_list'

netbox/tenancy/views.py

@@ -42,6 +42,8 @@ class TenantGroupEditView(TenantGroupCreateView):
 class TenantGroupBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'tenancy.delete_tenantgroup'
     cls = TenantGroup
+    queryset = TenantGroup.objects.annotate(tenant_count=Count('tenants'))
+    table = tables.TenantGroupTable
     default_return_url = 'tenancy:tenantgroup_list'
 
 
@@ -113,6 +115,7 @@ class TenantBulkImportView(PermissionRequiredMixin, BulkImportView):
 class TenantBulkEditView(PermissionRequiredMixin, BulkEditView):
     permission_required = 'tenancy.change_tenant'
     cls = Tenant
+    queryset = Tenant.objects.select_related('group')
     filter = filters.TenantFilter
     table = tables.TenantTable
     form = forms.TenantBulkEditForm
@@ -122,5 +125,7 @@ class TenantBulkEditView(PermissionRequiredMixin, BulkEditView):
 class TenantBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
     permission_required = 'tenancy.delete_tenant'
     cls = Tenant
+    queryset = Tenant.objects.select_related('group')
     filter = filters.TenantFilter
+    table = tables.TenantTable
     default_return_url = 'tenancy:tenant_list'

netbox/utilities/views.py

@@ -461,6 +461,7 @@ class BulkEditView(View):
 
     cls: The model of the objects being edited
     parent_cls: The model of the parent object (if any)
+    queryset: Custom queryset to use when retrieving objects (e.g. to select related objects)
     filter: FilterSet to apply when deleting by QuerySet
     table: The table used to display devices being edited
     form: The form class used to edit objects in bulk
@@ -470,9 +471,10 @@ class BulkEditView(View):
     """
     cls = None
     parent_cls = None
+    queryset = None
     filter = None
-    form = None
     table = None
+    form = None
     template_name = 'utilities/obj_bulk_edit.html'
     default_return_url = 'home'
 
@@ -539,7 +541,9 @@ class BulkEditView(View):
             initial_data['pk'] = pk_list
             form = self.form(self.cls, initial=initial_data)
 
-        table = self.table(self.cls.objects.filter(pk__in=pk_list), orderable=False)
+        # Retrieve objects being edited
+        queryset = self.queryset or self.cls.objects.all()
+        table = self.table(queryset.filter(pk__in=pk_list), orderable=False)
         if not table.rows:
             messages.warning(request, "No {} were selected.".format(self.cls._meta.verbose_name_plural))
             return redirect(return_url)
@@ -605,6 +609,7 @@ class BulkDeleteView(View):
 
     cls: The model of the objects being deleted
     parent_cls: The model of the parent object (if any)
+    queryset: Custom queryset to use when retrieving objects (e.g. to select related objects)
     filter: FilterSet to apply when deleting by QuerySet
     table: The table used to display devices being deleted
     form: The form class used to delete objects in bulk
@@ -614,6 +619,7 @@ class BulkDeleteView(View):
     """
     cls = None
     parent_cls = None
+    queryset = None
     filter = None
     table = None
     form = None
@@ -665,7 +671,9 @@ class BulkDeleteView(View):
         else:
             form = form_cls(initial={'pk': pk_list, 'return_url': return_url})
 
-        table = self.table(self.cls.objects.filter(pk__in=pk_list), orderable=False)
+        # Retrieve objects being deleted
+        queryset = self.queryset or self.cls.objects.all()
+        table = self.table(queryset.filter(pk__in=pk_list), orderable=False)
         if not table.rows:
             messages.warning(request, "No {} were selected for deletion.".format(self.cls._meta.verbose_name_plural))
             return redirect(return_url)