Update FrontPort model form

netbox/dcim/views.py

@@ -42,6 +42,7 @@ from wireless.models import WirelessLAN
 from . import filtersets, forms, tables
 from .choices import DeviceFaceChoices, InterfaceModeChoices
 from .models import *
+from .models.device_components import PortAssignment
 from .object_actions import BulkAddComponents, BulkDisconnect
 
 CABLE_TERMINATION_TYPES = {
@@ -3242,6 +3243,11 @@ class FrontPortListView(generic.ObjectListView):
 class FrontPortView(generic.ObjectView):
     queryset = FrontPort.objects.all()
 
+    def get_extra_context(self, request, instance):
+        return {
+            'rear_port_assignments': PortAssignment.objects.filter(front_port=instance).prefetch_related('rear_port'),
+        }
+
 
 @register_model_view(FrontPort, 'add', detail=False)
 class FrontPortCreateView(generic.ComponentCreateView):
@@ -3313,6 +3319,11 @@ class RearPortListView(generic.ObjectListView):
 class RearPortView(generic.ObjectView):
     queryset = RearPort.objects.all()
 
+    def get_extra_context(self, request, instance):
+        return {
+            'front_port_assignments': PortAssignment.objects.filter(rear_port=instance).prefetch_related('front_port'),
+        }
+
 
 @register_model_view(RearPort, 'add', detail=False)
 class RearPortCreateView(generic.ComponentCreateView):