fix migrations

InvenTree/company/migrations/0043_company_is_deleted.py

@@ -1,18 +0,0 @@
-# Generated by Django 3.2.12 on 2022-03-29 22:46
-
-from django.db import migrations, models
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('company', '0042_supplierpricebreak_updated'),
-    ]
-
-    operations = [
-        migrations.AddField(
-            model_name='company',
-            name='is_deleted',
-            field=models.BooleanField(default=False, help_text='Is this company a deleted placeholder?', verbose_name='is deleted'),
-        ),
-    ]

InvenTree/order/migrations/0064_alter_purchaseorder_supplier.py

@@ -0,0 +1,20 @@
+# Generated by Django 3.2.13 on 2022-04-30 22:11
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('company', '0042_supplierpricebreak_updated'),
+        ('order', '0063_alter_purchaseorderlineitem_unique_together'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='purchaseorder',
+            name='supplier',
+            field=models.ForeignKey(help_text='Company from which the items are being ordered', limit_choices_to={'is_supplier': True}, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='purchase_orders', to='company.company', verbose_name='Supplier'),
+        ),
+    ]

InvenTree/order/migrations/0064_auto_20220329_2246.py

@@ -1,25 +0,0 @@
-# Generated by Django 3.2.12 on 2022-03-29 22:46
-
-from django.db import migrations, models
-import order.models
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('company', '0043_company_is_deleted'),
-        ('order', '0063_alter_purchaseorderlineitem_unique_together'),
-    ]
-
-    operations = [
-        migrations.AlterField(
-            model_name='purchaseorder',
-            name='supplier',
-            field=models.ForeignKey(help_text='Company from which the items are being ordered', limit_choices_to={'is_supplier': True}, on_delete=models.SET(order.models.get_deleted_company), related_name='purchase_orders', to='company.company', verbose_name='Supplier'),
-        ),
-        migrations.AlterField(
-            model_name='salesorder',
-            name='customer',
-            field=models.ForeignKey(help_text='Company to which the items are being sold', limit_choices_to={'is_customer': True}, null=True, on_delete=models.SET(order.models.get_deleted_company), related_name='sales_orders', to='company.company', verbose_name='Customer'),
-        ),
-    ]