Fix #549 -- Multiple PDF ticket layouts (#938)

- [x] Data model
- [x] CRUD
- [x] Editor
- [x] Migration from old settings
- [x] Clone files when copying events
  - [x] badges?
- [x] Actual ticket output
- [x] Default layout on event creation
- [x] Link well from ticketing settings
- [x] Tests
- [x] Shipping plugin
  - [x] Migration
  - [x] Settings
  - [x] Create default
- [x] API

src/pretix/plugins/badges/api.py

@@ -0,0 +1,30 @@
+from rest_framework import viewsets
+
+from pretix.api.serializers.i18n import I18nAwareModelSerializer
+from pretix.api.serializers.order import CompatibleJSONField
+
+from .models import BadgeItem, BadgeLayout
+
+
+class ItemAssignmentSerializer(I18nAwareModelSerializer):
+    class Meta:
+        model = BadgeItem
+        fields = ('item',)
+
+
+class BadgeLayoutSerializer(I18nAwareModelSerializer):
+    layout = CompatibleJSONField()
+    item_assignments = ItemAssignmentSerializer(many=True)
+
+    class Meta:
+        model = BadgeLayout
+        fields = ('id', 'name', 'default', 'layout', 'background', 'item_assignments')
+
+
+class BadgeLayoutViewSet(viewsets.ReadOnlyModelViewSet):
+    serializer_class = BadgeLayoutSerializer
+    queryset = BadgeLayout.objects.none()
+    lookup_field = 'id'
+
+    def get_queryset(self):
+        return self.request.event.badge_layouts.all()

src/pretix/plugins/badges/forms.py

@@ -19,6 +19,7 @@ class BadgeItemForm(forms.ModelForm):
         event = kwargs.pop('event')
         super().__init__(*args, **kwargs)
         self.fields['layout'].label = _('Badge layout')
+        self.fields['layout'].empty_label = _('(Event default)')
         self.fields['layout'].queryset = event.badge_layouts.all()
         self.fields['layout'].required = False
 

src/pretix/plugins/badges/signals.py

@@ -70,6 +70,10 @@ def event_copy_data_receiver(sender, other, item_map, **kwargs):
         bl.pk = None
         bl.event = sender
         bl.save()
+
+        if bl.background and bl.background.name:
+            bl.background.save('background.pdf', bl.background)
+
         layout_map[oldid] = bl
 
     for bi in BadgeItem.objects.filter(item__event=other):

src/pretix/plugins/badges/urls.py

@@ -1,5 +1,8 @@
 from django.conf.urls import url
 
+from pretix.api.urls import event_router
+from pretix.plugins.badges.api import BadgeLayoutViewSet
+
 from .views import (
     LayoutCreate, LayoutDelete, LayoutEditorView, LayoutListView,
     LayoutSetDefault, OrderPrintDo,
@@ -19,3 +22,4 @@ urlpatterns = [
     url(r'^control/event/(?P<organizer>[^/]+)/(?P<event>[^/]+)/badges/(?P<layout>\d+)/editor',
         LayoutEditorView.as_view(), name='edit'),
 ]
+event_router.register('badgelayouts', BadgeLayoutViewSet)