Update model ordering parameters to ensure deterministic ordering

netbox/dcim/migrations/0089_deterministic_ordering.py

@@ -0,0 +1,21 @@
+# Generated by Django 2.2.8 on 2020-01-15 18:10
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dcim', '0088_powerfeed_available_power'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='device',
+            options={'ordering': ('name', 'pk'), 'permissions': (('napalm_read', 'Read-only access to devices via NAPALM'), ('napalm_write', 'Read/write access to devices via NAPALM'))},
+        ),
+        migrations.AlterModelOptions(
+            name='rack',
+            options={'ordering': ('site', 'group', 'name', 'pk')},
+        ),
+    ]

netbox/dcim/models/__init__.py

@@ -594,8 +594,9 @@ class Rack(ChangeLoggedModel, CustomFieldModel, RackElevationHelperMixin):
     }
 
     class Meta:
-        ordering = ['site', 'group', 'name']
+        ordering = ('site', 'group', 'name', 'pk')  # (site, group, name) may be non-unique
         unique_together = [
+            # Name and facility_id must be unique *only* within a RackGroup
             ['group', 'name'],
             ['group', 'facility_id'],
         ]
@@ -1392,7 +1393,7 @@ class Device(ChangeLoggedModel, ConfigContextModel, CustomFieldModel):
     }
 
     class Meta:
-        ordering = ['name']
+        ordering = ('name', 'pk')  # Name may be NULL
         unique_together = [
             ['site', 'tenant', 'name'],  # See validate_unique below
             ['rack', 'position', 'face'],