From c971ff9601613f62407add8f9cd313c58f762bca Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniele=20Vigan=C3=B2?= <daniele@vigano.me>
Date: Mon, 27 Jan 2025 23:22:08 +0100
Subject: [PATCH] Fix a CASCADE on shops

---
 .../0035_alter_rollingstock_shop.py           | 25 +++++++++++++++++++
 ram/roster/models.py                          |  2 +-
 2 files changed, 26 insertions(+), 1 deletion(-)
 create mode 100644 ram/roster/migrations/0035_alter_rollingstock_shop.py

diff --git a/ram/roster/migrations/0035_alter_rollingstock_shop.py b/ram/roster/migrations/0035_alter_rollingstock_shop.py
new file mode 100644
index 0000000..40b6b7b
--- /dev/null
+++ b/ram/roster/migrations/0035_alter_rollingstock_shop.py
@@ -0,0 +1,25 @@
+# Generated by Django 5.1.4 on 2025-01-27 22:21
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("metadata", "0023_shop"),
+        ("roster", "0034_rollingstock_shop"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="rollingstock",
+            name="shop",
+            field=models.ForeignKey(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.SET_NULL,
+                to="metadata.shop",
+            ),
+        ),
+    ]
diff --git a/ram/roster/models.py b/ram/roster/models.py
index 441ec95..999819b 100644
--- a/ram/roster/models.py
+++ b/ram/roster/models.py
@@ -104,7 +104,7 @@ class RollingStock(BaseModel):
     )
     production_year = models.SmallIntegerField(null=True, blank=True)
     shop = models.ForeignKey(
-        Shop, on_delete=models.CASCADE, null=True, blank=True
+        Shop, on_delete=models.SET_NULL, null=True, blank=True
     )
     purchase_date = models.DateField(null=True, blank=True)
     price = models.DecimalField(