fix: payment method must be enabled for donation ticket

app/api/tickets.py

@@ -77,6 +77,13 @@ def before_create_object(self, data, view_kwargs):
                         "Event having paid ticket must have a payment method",
                     )
 
+            if data.get('type') == 'donation':
+                if not event.is_payment_enabled():
+                    raise UnprocessableEntity(
+                        {'event_id': data['event']},
+                        "Event having donation ticket must have a payment method",
+                    )
+
             if data.get('sales_ends_at') > event.ends_at:
                 raise UnprocessableEntity(
                     {'sales_ends_at': '/data/attributes/sales-ends-at'},
@@ -248,6 +255,23 @@ def before_update_object(self, ticket, data, view_kwargs):
                     "Event having paid ticket must have a payment method",
                 )
 
+        if ticket.type == 'donation':
+            try:
+                event = (
+                    db.session.query(Event)
+                    .filter_by(id=ticket.event.id, deleted_at=None)
+                    .one()
+                )
+            except NoResultFound:
+                raise UnprocessableEntity(
+                    {'event_id': ticket.event.id}, "Event does not exist"
+                )
+            if not event.is_payment_enabled():
+                raise UnprocessableEntity(
+                    {'event_id': ticket.event.id},
+                    "Event having donation ticket must have a payment method",
+                )
+
     decorators = (
         api.has_permission(
             'is_coorganizer',