Fixes #5078: Fix assignment of existing IP addresses to interfaces via web UI

docs/release-notes/version-2.9.md

@@ -6,6 +6,7 @@
 
 * [#5063](https://github.com/netbox-community/netbox/issues/5063) - Fix "add device" link in rack elevations for opposite side of half-depth devices
 * [#5074](https://github.com/netbox-community/netbox/issues/5074) - Fix inclusion of VC member interfaces when viewing VC master
+* [#5078](https://github.com/netbox-community/netbox/issues/5078) - Fix assignment of existing IP addresses to interfaces via web UI
 * [#5081](https://github.com/netbox-community/netbox/issues/5081) - Fix exception during webhook processing with custom select field
 
 ---

netbox/ipam/tables.py

@@ -67,11 +67,7 @@ IPADDRESS_LINK = """
 """
 
 IPADDRESS_ASSIGN_LINK = """
-{% if request.GET %}
-    <a href="{% url 'ipam:ipaddress_edit' pk=record.pk %}?interface={{ request.GET.interface }}&return_url={{ request.GET.return_url }}">{{ record }}</a>
-{% else %}
-    <a href="{% url 'ipam:ipaddress_edit' pk=record.pk %}?interface={{ record.interface.pk }}&return_url={{ request.path }}">{{ record }}</a>
-{% endif %}
+<a href="{% url 'ipam:ipaddress_edit' pk=record.pk %}?{% if request.GET.interface %}interface={{ request.GET.interface }}{% elif request.GET.vminterface %}vminterface={{ request.GET.vminterface }}{% endif %}&return_url={{ request.GET.return_url }}">{{ record }}</a>
 """
 
 VRF_LINK = """

netbox/ipam/views.py

@@ -582,7 +582,7 @@ class IPAddressAssignView(ObjectView):
     def dispatch(self, request, *args, **kwargs):
 
         # Redirect user if an interface has not been provided
-        if 'interface' not in request.GET:
+        if 'interface' not in request.GET and 'vminterface' not in request.GET:
             return redirect('ipam:ipaddress_add')
 
         return super().dispatch(request, *args, **kwargs)
@@ -609,7 +609,7 @@ class IPAddressAssignView(ObjectView):
         return render(request, 'ipam/ipaddress_assign.html', {
             'form': form,
             'table': table,
-            'return_url': request.GET.get('return_url', ''),
+            'return_url': request.GET.get('return_url'),
         })