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assets/migrations/0006_auto_20180728_1451_squashed_0021_auto_20190105_1156.py

@@ -57,7 +57,7 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name='asset',
             name='parent',
-            field=models.ForeignKey(blank=True, null=True, on_delete=None, related_name='asset_parent', to='assets.Asset'),
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='asset_parent', to='assets.Asset'),
         ),
         migrations.RemoveField(
             model_name='asset',
@@ -85,7 +85,7 @@ class Migration(migrations.Migration):
                 ('circuits', models.IntegerField(blank=True, null=True)),
                 ('cores', models.IntegerField(blank=True, null=True)),
                 ('category', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='assets.AssetCategory')),
-                ('parent', models.ForeignKey(blank=True, null=True, on_delete=None, related_name='asset_parent', to='assets.Cable')),
+                ('parent', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='asset_parent', to='assets.Cable')),
             ],
             options={
                 'abstract': False,

assets/migrations/0010_auto_20200208_1342.py

@@ -0,0 +1,21 @@
+# Generated by Django 3.0.3 on 2020-02-08 13:42
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('assets', '0009_auto_20200103_2215'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='asset',
+            options={'ordering': ['asset_id_prefix', 'asset_id_number'], 'permissions': [('asset_finance', 'Can see financial data for assets')]},
+        ),
+        migrations.AlterModelOptions(
+            name='supplier',
+            options={},
+        ),
+    ]

assets/models.py

@@ -43,12 +43,6 @@ class AssetStatus(models.Model):
 class Supplier(models.Model, RevisionMixin):
     name = models.CharField(max_length=80)
 
-    class Meta:
-        ordering = ['name']
-        permissions = (
-            ('view_supplier', 'Can view a supplier'),
-        )
-
     def get_absolute_url(self):
         return reverse('supplier_list')
 
@@ -70,10 +64,9 @@ class Connector(models.Model):
 class Asset(models.Model, RevisionMixin):
     class Meta:
         ordering = ['asset_id_prefix', 'asset_id_number']
-        permissions = (
-            ('asset_finance', 'Can see financial data for assets'),
-            ('view_asset', 'Can view an asset')
-        )
+        permissions = [
+            ('asset_finance', 'Can see financial data for assets')
+        ]
 
     parent = models.ForeignKey(to='self', related_name='asset_parent',
                                blank=True, null=True, on_delete=models.SET_NULL)