Customer accounts & Memberships (#2024)

src/pretix/presale/views/__init__.py

@@ -46,7 +46,7 @@ from django_scopes import scopes_disabled
 
 from pretix.base.i18n import language
 from pretix.base.models import (
-    CartPosition, InvoiceAddress, ItemAddOn, OrderPosition, Question,
+    CartPosition, Customer, InvoiceAddress, ItemAddOn, OrderPosition, Question,
     QuestionAnswer, QuestionOption,
 )
 from pretix.base.services.cart import get_fees
@@ -91,6 +91,14 @@ class CartMixin:
         from pretix.presale.views.cart import cart_session
         return cart_session(self.request)
 
+    @cached_property
+    def cart_customer(self):
+        if self.cart_session.get('customer_mode', 'guest') == 'login':
+            try:
+                return self.request.organizer.customers.get(pk=self.cart_session.get('customer', -1))
+            except Customer.DoesNotExist:
+                return
+
     @cached_property
     def invoice_address(self):
         return cached_invoice_address(self.request)
@@ -273,7 +281,7 @@ def get_cart(request):
                 'item__category__position', 'item__category_id', 'item__position', 'item__name', 'variation__value'
             ).select_related(
                 'item', 'variation', 'subevent', 'subevent__event', 'subevent__event__organizer',
-                'item__tax_rule', 'addon_to'
+                'item__tax_rule', 'addon_to', 'used_membership', 'used_membership__membership_type'
             ).select_related(
                 'addon_to'
             ).prefetch_related(