add payment protect in renewal

T8902 · T8902 · commit d9958484f0c7 · 2025-11-20T14:29:19.000+01:00
diff --git a/website/registrations/models.py b/website/registrations/models.py
@@ -486,7 +486,7 @@ class Renewal(Entry):
     # two kinds of entries. That way, we can efficiently look the right Payable.
     payment = models.OneToOneField(
         "payments.Payment",
-        on_delete=models.SET_NULL,
+        on_delete=models.PROTECT,
         blank=True,
         null=True,
     )

Original file line number	Diff line number	Diff line change
`@@ -486,7 +486,7 @@ class Renewal(Entry):`
`486`	`486`	`# two kinds of entries. That way, we can efficiently look the right Payable.`
`487`	`487`	`payment = models.OneToOneField(`
`488`	`488`	`"payments.Payment",`
`489`		`- on_delete=models.SET_NULL,`
	`489`	`+ on_delete=models.PROTECT,`
`490`	`490`	`blank=True,`
`491`	`491`	`null=True,`
`492`	`492`	`)`