Revert initial model changes

netbox/dcim/filtersets.py

@@ -1499,9 +1499,9 @@ class VirtualChassisFilterSet(NetBoxModelFilterSet):
 
 class CableFilterSet(TenancyFilterSet, NetBoxModelFilterSet):
     termination_a_type = ContentTypeFilter()
-    termination_a_ids = MultiValueNumberFilter()
+    termination_a_id = MultiValueNumberFilter()
     termination_b_type = ContentTypeFilter()
-    termination_b_ids = MultiValueNumberFilter()
+    termination_b_id = MultiValueNumberFilter()
     type = django_filters.MultipleChoiceFilter(
         choices=CableTypeChoices
     )
@@ -1537,7 +1537,7 @@ class CableFilterSet(TenancyFilterSet, NetBoxModelFilterSet):
 
     class Meta:
         model = Cable
-        fields = ['id', 'label', 'length', 'length_unit', 'termination_a_ids', 'termination_b_ids']
+        fields = ['id', 'label', 'length', 'length_unit', 'termination_a_id', 'termination_b_id']
 
     def search(self, queryset, name, value):
         if not value.strip():

netbox/dcim/forms/connections.py

@@ -83,6 +83,11 @@ class ConnectCableToDeviceForm(TenancyForm, NetBoxModelForm):
             'rack_id': '$termination_b_rack',
         }
     )
+    termination_b_ids = DynamicModelMultipleChoiceField(
+        queryset=Interface.objects.all(),
+        label='Name',
+        disabled_indicator='_occupied'
+    )
 
     class Meta:
         model = Cable

netbox/dcim/migrations/0154_cable_add_termination_id_arrays.py

@@ -1,24 +0,0 @@
-# Generated by Django 4.0.4 on 2022-04-25 16:35
-
-import django.contrib.postgres.fields
-from django.db import migrations, models
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('dcim', '0153_created_datetimefield'),
-    ]
-
-    operations = [
-        migrations.AddField(
-            model_name='cable',
-            name='termination_a_ids',
-            field=django.contrib.postgres.fields.ArrayField(base_field=models.PositiveBigIntegerField(), null=True, size=None),
-        ),
-        migrations.AddField(
-            model_name='cable',
-            name='termination_b_ids',
-            field=django.contrib.postgres.fields.ArrayField(base_field=models.PositiveBigIntegerField(), null=True, size=None),
-        ),
-    ]

netbox/dcim/migrations/0155_cable_copy_termination_ids.py

@@ -1,36 +0,0 @@
-from django.contrib.postgres.fields import ArrayField
-from django.db import migrations
-from django.db.models import ExpressionWrapper, F
-
-
-def copy_termination_ids(apps, schema_editor):
-    """
-    Copy original A & B termination ID values to new array fields.
-    """
-    Cable = apps.get_model('dcim', 'Cable')
-
-    # TODO: Optimize data migration using F expressions
-    # Cable.objects.update(
-    #     termination_a_ids=ExpressionWrapper(F('termination_a_id'), output_field=ArrayField),
-    #     termination_b_ids=ExpressionWrapper(F('termination_b_id'), output_field=ArrayField)
-    # )
-
-    for cable in Cable.objects.all():
-        Cable.objects.filter(pk=cable.pk).update(
-            termination_a_ids=[cable.termination_a_id],
-            termination_b_ids=[cable.termination_b_id]
-        )
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('dcim', '0154_cable_add_termination_id_arrays'),
-    ]
-
-    operations = [
-        migrations.RunPython(
-            code=copy_termination_ids,
-            reverse_code=migrations.RunPython.noop
-        ),
-    ]

netbox/dcim/migrations/0156_cable_delete_old_termination_ids.py

@@ -1,25 +0,0 @@
-# Generated by Django 4.0.4 on 2022-04-25 20:45
-
-from django.db import migrations
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('dcim', '0155_cable_copy_termination_ids'),
-    ]
-
-    operations = [
-        migrations.AlterUniqueTogether(
-            name='cable',
-            unique_together=set(),
-        ),
-        migrations.RemoveField(
-            model_name='cable',
-            name='termination_a_id',
-        ),
-        migrations.RemoveField(
-            model_name='cable',
-            name='termination_b_id',
-        ),
-    ]

netbox/dcim/models/cables.py

@@ -39,9 +39,10 @@ class Cable(NetBoxModel):
         on_delete=models.PROTECT,
         related_name='+'
     )
-    termination_a_ids = ArrayField(
-        base_field=models.PositiveBigIntegerField(),
-        null=True
+    termination_a_id = models.PositiveBigIntegerField()
+    termination_a = GenericForeignKey(
+        ct_field='termination_a_type',
+        fk_field='termination_a_id'
     )
     termination_b_type = models.ForeignKey(
         to=ContentType,
@@ -49,9 +50,10 @@ class Cable(NetBoxModel):
         on_delete=models.PROTECT,
         related_name='+'
     )
-    termination_b_ids = ArrayField(
-        base_field=models.PositiveBigIntegerField(),
-        null=True
+    termination_b_id = models.PositiveBigIntegerField()
+    termination_b = GenericForeignKey(
+        ct_field='termination_b_type',
+        fk_field='termination_b_id'
     )
     type = models.CharField(
         max_length=50,
@@ -114,6 +116,10 @@ class Cable(NetBoxModel):
 
     class Meta:
         ordering = ['pk']
+        unique_together = (
+            ('termination_a_type', 'termination_a_id'),
+            ('termination_b_type', 'termination_b_id'),
+        )
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)