Render payment info on 'Confirm' page

src/pretix/base/payment.py

@@ -98,6 +98,13 @@ class BasePaymentProvider:
         ctx = Context({'request': request, 'form': form})
         return template.render(ctx)
 
+    def checkout_confirm_render(self, request) -> str:
+        """
+        Returns the HTML that should be displayed when the user selected this provider
+        on the 'confirm order' page.
+        """
+        raise NotImplementedError()
+
     def checkout_prepare(self, request, total) -> "bool|HttpResponse":
         """
         Will be called if the user selects this provider as his payment method.

src/pretix/plugins/banktransfer/payment.py

@@ -29,3 +29,9 @@ class BankTransfer(BasePaymentProvider):
 
     def checkout_is_valid_session(self, request):
         return True
+
+    def checkout_confirm_render(self, request):
+        form = self.checkout_form(request)
+        template = get_template('pretixplugins/banktransfer/checkout_payment_confirm.html')
+        ctx = Context({'request': request, 'form': form, 'settings': self.settings})
+        return template.render(ctx)

src/pretix/plugins/banktransfer/templates/pretixplugins/banktransfer/checkout_payment_confirm.html

@@ -0,0 +1,10 @@
+{% load i18n %}
+
+<p>{% blocktrans trimmed %}
+    After completing your purchase, we will ask you to transfer the money to the following
+    bank account, using a personal reference code.
+{% endblocktrans %}</p>
+
+<address>
+    {{ settings.bank_details|linebreaksbr }}
+</address>

src/pretix/presale/views/checkout.py

@@ -252,6 +252,7 @@ class OrderConfirm(EventViewMixin, CartDisplayMixin, EventLoginRequiredMixin, Ch
     def get_context_data(self, **kwargs):
         ctx = super().get_context_data(**kwargs)
         ctx['cart'] = self.get_cart()
+        ctx['payment'] = self.payment_provider.checkout_confirm_render(self.request)
         return ctx
 
     @cached_property