Support bulk removal of parent interfaces via UI if all children are included

netbox/dcim/tests/test_views.py

@@ -2531,6 +2531,36 @@ class InterfaceTestCase(ViewTestCases.DeviceComponentViewTestCase):
         response = self.client.get(reverse('dcim:interface_trace', kwargs={'pk': interface1.pk}))
         self.assertHttpStatus(response, 200)
 
+    def test_bulk_delete_child_interfaces(self):
+        interface1 = Interface.objects.get(name='Interface 1')
+        device = interface1.device
+        self.add_permissions('dcim.delete_interface')
+
+        # Create a child interface
+        child = Interface.objects.create(
+            device=device,
+            name='Interface 1A',
+            type=InterfaceTypeChoices.TYPE_VIRTUAL,
+            parent=interface1
+        )
+        self.assertEqual(device.interfaces.count(), 6)
+
+        # Attempt to delete only the parent interface
+        data = {
+            'confirm': True,
+        }
+        self.client.post(self._get_url('delete', interface1), data)
+        self.assertEqual(device.interfaces.count(), 6)  # Parent was not deleted
+
+        # Attempt to bulk delete parent & child together
+        data = {
+            'pk': [interface1.pk, child.pk],
+            'confirm': True,
+            '_confirm': True,  # Form button
+        }
+        self.client.post(self._get_url('bulk_delete'), data)
+        self.assertEqual(device.interfaces.count(), 4)  # Child & parent were both deleted
+
 
 class FrontPortTestCase(ViewTestCases.DeviceComponentViewTestCase):
     model = FrontPort

netbox/dcim/views.py

@@ -1,5 +1,4 @@
 import traceback
-from collections import defaultdict
 
 from django.contrib import messages
 from django.contrib.contenttypes.models import ContentType
@@ -26,6 +25,7 @@ from tenancy.views import ObjectContactsView
 from utilities.forms import ConfirmationForm
 from utilities.paginator import EnhancedPaginator, get_paginate_count
 from utilities.permissions import get_permission_for_model
+from utilities.query_functions import CollateAsChar
 from utilities.utils import count_related
 from utilities.views import GetReturnURLMixin, ObjectPermissionRequiredMixin, ViewTab, register_model_view
 from virtualization.models import VirtualMachine
@@ -2562,7 +2562,8 @@ class InterfaceBulkDisconnectView(BulkDisconnectView):
 
 
 class InterfaceBulkDeleteView(generic.BulkDeleteView):
-    queryset = Interface.objects.all()
+    # Ensure child interfaces are deleted prior to their parents
+    queryset = Interface.objects.order_by('device', 'parent', CollateAsChar('_name'))
     filterset = filtersets.InterfaceFilterSet
     table = tables.InterfaceTable
 

netbox/netbox/views/generic/bulk_views.py

@@ -798,6 +798,7 @@ class BulkDeleteView(GetReturnURLMixin, BaseMultiObjectView):
                 queryset = self.queryset.filter(pk__in=pk_list)
                 deleted_count = queryset.count()
                 try:
+                    with transaction.atomic():
                         for obj in queryset:
                             # Take a snapshot of change-logged models
                             if hasattr(obj, 'snapshot'):

netbox/virtualization/tests/test_views.py

@@ -374,3 +374,32 @@ class VMInterfaceTestCase(ViewTestCases.DeviceComponentViewTestCase):
             'untagged_vlan': vlans[0].pk,
             'tagged_vlans': [v.pk for v in vlans[1:4]],
         }
+
+    def test_bulk_delete_child_interfaces(self):
+        interface1 = VMInterface.objects.get(name='Interface 1')
+        virtual_machine = interface1.virtual_machine
+        self.add_permissions('virtualization.delete_vminterface')
+
+        # Create a child interface
+        child = VMInterface.objects.create(
+            virtual_machine=virtual_machine,
+            name='Interface 1A',
+            parent=interface1
+        )
+        self.assertEqual(virtual_machine.interfaces.count(), 4)
+
+        # Attempt to delete only the parent interface
+        data = {
+            'confirm': True,
+        }
+        self.client.post(self._get_url('delete', interface1), data)
+        self.assertEqual(virtual_machine.interfaces.count(), 4)  # Parent was not deleted
+
+        # Attempt to bulk delete parent & child together
+        data = {
+            'pk': [interface1.pk, child.pk],
+            'confirm': True,
+            '_confirm': True,  # Form button
+        }
+        self.client.post(self._get_url('bulk_delete'), data)
+        self.assertEqual(virtual_machine.interfaces.count(), 2)  # Child & parent were both deleted

netbox/virtualization/views.py

@@ -1,5 +1,4 @@
 import traceback
-from collections import defaultdict
 
 from django.contrib import messages
 from django.db import transaction
@@ -19,6 +18,7 @@ from ipam.tables import InterfaceVLANTable
 from netbox.constants import DEFAULT_ACTION_PERMISSIONS
 from netbox.views import generic
 from tenancy.views import ObjectContactsView
+from utilities.query_functions import CollateAsChar
 from utilities.utils import count_related
 from utilities.views import ViewTab, register_model_view
 from . import filtersets, forms, tables
@@ -550,7 +550,8 @@ class VMInterfaceBulkRenameView(generic.BulkRenameView):
 
 
 class VMInterfaceBulkDeleteView(generic.BulkDeleteView):
-    queryset = VMInterface.objects.all()
+    # Ensure child interfaces are deleted prior to their parents
+    queryset = VMInterface.objects.order_by('virtual_machine', 'parent', CollateAsChar('_name'))
     filterset = filtersets.VMInterfaceFilterSet
     table = tables.VMInterfaceTable