Set variant to sepa or transfer

aleksis/apps/paweljong/models.py

@@ -272,7 +272,7 @@ class EventRegistration(ExtensibleModel):
 
         invoice, __ = Invoice.objects.get_or_create(for_content_type=ContentType.objects.get_for_model(self), for_object_id=self.pk, defaults={
             "group": group,
-            "variant": "dummy",
+            "variant": "sepa" if self.accept_sepa else "transfer",
             "transaction_id": f"HNF-{self.date_registered.strftime('%Y-%m')}-{self.id}",
             "currency": "EUR",
             "total": self._get_total_amount()[0],