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Bank transfer: Properly deal with fees of aborted payment methods

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Raphael Michel
2019-03-15 11:27:55 +01:00
parent 130ba3c217
commit a21ea34944
5 changed files with 181 additions and 71 deletions
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35
src/pretix/presale/views/order.py
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@@ -25,7 +25,7 @@ from pretix.base.services.invoices import (
generate_cancellation, generate_invoice, invoice_pdf, invoice_pdf_task,
invoice_qualified,
)
from pretix.base.services.orders import cancel_order
from pretix.base.services.orders import cancel_order, change_payment_provider
from pretix.base.services.tickets import generate
from pretix.base.signals import allow_ticket_download, register_ticket_outputs
from pretix.base.views.mixins import OrderQuestionsViewMixin
@@ -359,7 +359,7 @@ class OrderPayChangeMethod(EventViewMixin, OrderDetailMixin, TemplateView):
def open_fees(self):
e = OrderPayment.objects.filter(
fee=OuterRef('pk'),
state=OrderPayment.PAYMENT_STATE_CONFIRMED
state__in=(OrderPayment.PAYMENT_STATE_CONFIRMED, OrderPayment.PAYMENT_STATE_REFUNDED)
)
return self.order.fees.annotate(has_p=Exists(e)).filter(
Q(fee_type=OrderFee.FEE_TYPE_PAYMENT) & ~Q(has_p=True)
@@ -374,7 +374,7 @@ class OrderPayChangeMethod(EventViewMixin, OrderDetailMixin, TemplateView):
@cached_property
def _position_sum(self):
return self.order.positions.aggregate(sum=Sum('price'))['sum']
return self.order.positions.aggregate(sum=Sum('price'))['sum'] or Decimal('0.00')
@cached_property
def provider_forms(self):
@@ -407,35 +407,8 @@ class OrderPayChangeMethod(EventViewMixin, OrderDetailMixin, TemplateView):
request.session['payment'] = p['provider'].identifier
request.session['payment_change_{}'.format(self.order.pk)] = '1'
fees = list(self.open_fees)
if fees:
fee = fees[0]
if len(fees) > 1:
for f in fees[1:]:
f.delete()
else:
fee = OrderFee(fee_type=OrderFee.FEE_TYPE_PAYMENT, value=Decimal('0.00'), order=self.order)
old_fee = fee.value
new_fee = p['provider'].calculate_fee(self.order.pending_sum - old_fee)
with transaction.atomic():
if new_fee:
fee.value = new_fee
fee.internal_type = p['provider'].identifier
fee._calculate_tax()
fee.save()
else:
if fee.pk:
fee.delete()
fee = None
if self.open_payment and self.open_payment.state in (OrderPayment.PAYMENT_STATE_PENDING,
OrderPayment.PAYMENT_STATE_CREATED):
self.open_payment.state = OrderPayment.PAYMENT_STATE_CANCELED
self.open_payment.save(update_fields=['state'])
self.order.total = self._position_sum + (self.order.fees.aggregate(sum=Sum('value'))['sum'] or 0)
self.order.save(update_fields=['total'])
old_fee, new_fee, fee = change_payment_provider(self.order, p['provider'], None)
newpayment = self.order.payments.create(
state=OrderPayment.PAYMENT_STATE_CREATED,
provider=p['provider'].identifier,