New signals: fee_calculation_for_cart, order_fee_calculation

src/pretix/presale/signals.py

@@ -68,7 +68,6 @@ You will recieve the request triggering the order creation as the ``request`` ke
 
 As with all event-plugin signals, the ``sender`` keyword argument will contain the event.
 """
-
 checkout_confirm_page_content = EventPluginSignal(
     providing_args=['request']
 )
@@ -80,6 +79,18 @@ As with all plugin signals, the ``sender`` keyword argument will contain the eve
 argument will contain the request object.
 """
 
+fee_calculation_for_cart = EventPluginSignal(
+    providing_args=['request']
+)
+"""
+This signals allows you to add fees to a cart. You are expected to return a list of ``OrderFee``
+objects that are not yet saved to the database (because there is no order yet).
+
+As with all plugin signals, the ``sender`` keyword argument will contain the event. A ``request``
+argument will contain the request object and ``invoice_address`` the invoice address (useful for
+tax calculation).
+"""
+
 contact_form_fields = EventPluginSignal(
     providing_args=[]
 )

src/pretix/presale/templates/pretixpresale/event/fragment_cart.html

@@ -159,7 +159,7 @@
 {% for fee in cart.fees %}
     <div class="row cart-row">
         <div class="col-md-4 col-xs-6">
-            <strong>{% trans "Payment method fee" %}</strong>
+            <strong>{{ fee.get_fee_type_display }}</strong>
         </div>
         <div class="col-md-3 col-xs-6 col-md-offset-5 price">
             {% if event.settings.display_net_prices %}

src/pretix/presale/views/__init__.py

@@ -110,7 +110,7 @@ class CartMixin:
                 except InvoiceAddress.DoesNotExist:
                     pass
 
-            fees = get_fees(self.request.event, total, ia, self.request.session.get('payment'))
+            fees = get_fees(self.request.event, self.request, total, ia, self.request.session.get('payment'))
 
         total += sum([f.value for f in fees])
         net_total += sum([f.net_value for f in fees])