Conversation
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What's still left todo: How to integrate this into the front end?
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| def get_or_create_wallet_membership_type(organizer): | ||
| membership_type = organizer.membership_types.filter(name=membership_type_name_for_organizer(organizer)).first() | ||
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| if membership_type is not None: |
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.filter(...).exists() is the prettier sytnax
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If I read the docs correctly, that doesn't give me the object (which I want to return, because I use it in lines 49 and 53). But in line 49, I can use exists. I've changed that.
| try: | ||
| gc = GiftCard.objects.select_for_update(of=OF_SELF).get(pk=gcpk) | ||
| except GiftCard.DoesNotExist: | ||
| raise PaymentException(_("This gift card does not support this currency.")) |
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exception text is wrong (not your fault)
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What should it say?
| payment.info_data['transaction_id'] = trans.pk | ||
| payment.confirm(send_mail=not is_early_special_case, generate_invoice=not is_early_special_case) | ||
| try: | ||
| gc = GiftCard.objects.select_for_update(of=OF_SELF).get(pk=gcpk) |
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.get() evaluates the queryset, which activates the lock. if you want to keep it locked, the evaluation needs to happen inside the same transaction as the other operations
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is there a reason to keep the lock? Shouldn't the lock around the write part be enough? Ore are you worried about the gift card changing owners?
pretix_wallet/signals.py
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| @receiver(order_paid, dispatch_uid="payment_wallet_order_paid") | ||
| def wallet_order_paid(sender, order, **kwargs): | ||
| CustomerWallet.create_if_non_existent(sender.organizer, order.customer) |
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all of this should only happen if there is a topup product
| return Response(WalletSerializer(self.wallet).data, status=HTTP_201_CREATED) | ||
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| class WalletRequiredRedirectView(CustomerRequiredMixin, WalletRequiredMixin, View): |
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I'll keep this until we've verified the checkout step actually works. If that's the case, we can remove it.
| 'for the top-up product?') | ||
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| def is_completed(self, request, warn=False): | ||
| if self.request.customer.wallet: |
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IIRC this raises if not existent
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Yes, this should never happen (see get). This I intended this to raise as this ever happening is a bug. Then, some of our central assumptions must be pretty wrong.
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By marking a pretix products as "top up", buying them will charge a users wallet by their value. This PR also introduces a wallet membership type, automatically creates and assigns it to wallet users. You can use this to ensure users buying top up products are forced to sign in.
It also introduces a redirect url route using which you can funnel users through the wallet login and them redirect them to an arbitrary target. This is useful for linking users to top-up shops since it ensures the correct data (user, wallet, membership type, membership) are created before the user enters the shop.