Add constraints on the enum fields

app/grandchallenge/invoices/migrations/0005_invoice_payment_type_in_choices_and_more.py

@@ -0,0 +1,38 @@
+# Generated by Django 4.2.19 on 2025-02-26 12:41
+
+from django.db import migrations, models
+
+import grandchallenge.invoices.models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("invoices", "0004_alter_invoice_payment_status"),
+    ]
+
+    operations = [
+        migrations.AddConstraint(
+            model_name="invoice",
+            constraint=models.CheckConstraint(
+                check=models.Q(
+                    (
+                        "payment_type__in",
+                        grandchallenge.invoices.models.PaymentTypeChoices,
+                    )
+                ),
+                name="payment_type_in_choices",
+            ),
+        ),
+        migrations.AddConstraint(
+            model_name="invoice",
+            constraint=models.CheckConstraint(
+                check=models.Q(
+                    (
+                        "payment_status__in",
+                        grandchallenge.invoices.models.PaymentStatusChoices,
+                    )
+                ),
+                name="payment_status_in_choices",
+            ),
+        ),
+    ]

app/grandchallenge/invoices/models.py

@@ -88,3 +88,15 @@ class Invoice(models.Model):
         choices=PaymentStatusChoices.choices,
         default=PaymentStatusChoices.INITIALIZED,
     )
+
+    class Meta:
+        constraints = [
+            models.CheckConstraint(
+                check=models.Q(payment_type__in=PaymentTypeChoices),
+                name="payment_type_in_choices",
+            ),
+            models.CheckConstraint(
+                check=models.Q(payment_status__in=PaymentStatusChoices),
+                name="payment_status_in_choices",
+            ),
+        ]