Display payment details

src/pretix/base/models.py

@@ -714,7 +714,7 @@ class Item(Versionable):
         if self.event:
             self.event.get_cache().clear()
 
-    def delete(self):
+    def delete(self, *args, **kwargs):
         self.deleted = True
         self.active = False
         super().save()
@@ -1229,11 +1229,13 @@ class Order(Versionable):
     STATUS_PAID = "p"
     STATUS_EXPIRED = "e"
     STATUS_CANCELLED = "c"
+    STATUS_REFUNDED = "r"
     STATUS_CHOICE = (
         (STATUS_PAID, _("pending")),
         (STATUS_PENDING, _("paid")),
         (STATUS_EXPIRED, _("expired")),
         (STATUS_CANCELLED, _("cancelled")),
+        (STATUS_REFUNDED, _("refunded"))
     )
 
     code = models.CharField(

src/pretix/base/payment.py

@@ -150,3 +150,28 @@ class BasePaymentProvider:
         :param order: The order object
         """
         return None
+
+    def order_pending_render(self, request, order) -> str:
+        """
+        Will be called if the user views the detail page of an unpaid order which is
+        associated with this payment provider.
+
+        It should return HTML code which should be displayed to the user. It should contian
+        instructions on how to continue with the payment process, either in form of text
+        or buttons/links/etc.
+
+        :param order: The order object
+        """
+        raise NotImplementedError()
+
+    def order_paid_render(self, request, order) -> str:
+        """
+        Will be called if the user views the detail page of an paid order which is
+        associated with this payment provider.
+
+        It should return HTML code which should be displayed to the user or None,
+        if there is nothing to say.
+
+        :param order: The order object
+        """
+        return None