Connect giftcards with customer accounts (#5126)

Connect giftcards with customer accounts, show giftcards during checkout and in account , show giftcard list in backend customer view

src/pretix/presale/views/customer.py

@@ -368,6 +368,12 @@ class CustomerAccountBaseMixin(CustomerRequiredMixin):
                 'active': url_name.startswith('organizer.customer.membership'),
                 'icon': 'id-badge',
             },
+            {
+                'label': _('Gift cards'),
+                'url': eventreverse(self.request.organizer, 'presale:organizer.customer.giftcards', kwargs={}),
+                'active': url_name.startswith('organizer.customer.giftcard'),
+                'icon': 'gift',
+            },
             {
                 'label': _('Addresses'),
                 'url': eventreverse(self.request.organizer, 'presale:organizer.customer.addresses', kwargs={}),
@@ -461,6 +467,15 @@ class MembershipUsageView(CustomerAccountBaseMixin, ListView):
         return ctx
 
 
+class GiftcardView(CustomerAccountBaseMixin, ListView):
+    template_name = 'pretixpresale/organizers/customer_giftcards.html'
+    context_object_name = 'gift_cards'
+    paginate_by = 20
+
+    def get_queryset(self):
+        return self.request.customer.customer_gift_cards.all()
+
+
 class AddressView(CustomerAccountBaseMixin, ListView):
     template_name = 'pretixpresale/organizers/customer_addresses.html'
     context_object_name = 'invoice_addresses'