Code formatting cleanup

netbox/virtualization/models.py

@@ -8,7 +8,7 @@ from django.urls import reverse
 from django.utils.encoding import python_2_unicode_compatible
 
 from dcim.models import Device
-from extras.models import CustomFieldModel, CustomFieldValue
+from extras.models import CustomFieldModel
 from utilities.models import CreatedUpdatedModel
 from .constants import DEVICE_STATUS_ACTIVE, VM_STATUS_CHOICES, VM_STATUS_CLASSES
 
@@ -119,7 +119,7 @@ class Cluster(CreatedUpdatedModel, CustomFieldModel):
         blank=True
     )
     custom_field_values = GenericRelation(
-        to=CustomFieldValue,
+        to='extras.CustomFieldValue',
         content_type_field='obj_type',
         object_id_field='obj_id'
     )
@@ -167,7 +167,7 @@ class VirtualMachine(CreatedUpdatedModel, CustomFieldModel):
     A virtual machine which runs inside a Cluster.
     """
     cluster = models.ForeignKey(
-        to=Cluster,
+        to='virtualization.Cluster',
         on_delete=models.PROTECT,
         related_name='virtual_machines'
     )
@@ -196,9 +196,9 @@ class VirtualMachine(CreatedUpdatedModel, CustomFieldModel):
     )
     role = models.ForeignKey(
         to='dcim.DeviceRole',
-        limit_choices_to={'vm_role': True},
         on_delete=models.PROTECT,
         related_name='virtual_machines',
+        limit_choices_to={'vm_role': True},
         blank=True,
         null=True
     )
@@ -237,7 +237,7 @@ class VirtualMachine(CreatedUpdatedModel, CustomFieldModel):
         blank=True
     )
     custom_field_values = GenericRelation(
-        to=CustomFieldValue,
+        to='extras.CustomFieldValue',
         content_type_field='obj_type',
         object_id_field='obj_id'
     )