def post(self, request, *args, **kwargs):
client = Iamporter(imp_key=imp_key, imp_secret=imp_secret)
imp_uid = request.data['imp_uid']
customer_id = request.user.pk
payment_info = client.find_payment(imp_uid=imp_uid)
queryset = Cart.objects.filter(customer=customer_id).aggregate(
total_amount=Sum(
Case(When(product__is_discount=True,
then=F('product__discount_price') * F('quantity')),
default=F('product__price') * F('quantity'))))
instance = {'status': 'failed'}
if payment_info['amount'] == queryset['total_amount']:
with transaction.atomic():
ordered = Order.objects.bulk_create(
Cart.objects.filter(customer=customer_id))
Cart.objects.filter(customer=customer_id).delete()
for i in ordered:
product = Product.objects.get(name=i.product)
product.stock -= i.quantity
product.save()
instance = {'status': 'success'}
else:
client.cancel_payment(imp_uid=imp_uid, reason="amount mismatch")
serializer = self.get_serializer(instance)
return Response(serializer.data)
