Refactor rolling stock

dcc/roster/migrations/0033_car_equipment_other.py

@@ -0,0 +1,35 @@
+# Generated by Django 4.0.2 on 2022-03-30 20:57
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('roster', '0032_alter_engine_options'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Car',
+            fields=[
+                ('rollingstock_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='roster.rollingstock')),
+            ],
+            bases=('roster.rollingstock',),
+        ),
+        migrations.CreateModel(
+            name='Equipment',
+            fields=[
+                ('rollingstock_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='roster.rollingstock')),
+            ],
+            bases=('roster.rollingstock',),
+        ),
+        migrations.CreateModel(
+            name='Other',
+            fields=[
+                ('rollingstock_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='roster.rollingstock')),
+            ],
+            bases=('roster.rollingstock',),
+        ),
+    ]