REST API: Add organizer-level settings (#1866)

Co-authored-by: Martin Gross <gross@rami.io>

src/pretix/api/views/organizer.py

@@ -6,7 +6,9 @@ from django.shortcuts import get_object_or_404
 from django.utils.functional import cached_property
 from django_filters.rest_framework import DjangoFilterBackend, FilterSet
 from django_scopes import scopes_disabled
-from rest_framework import filters, mixins, serializers, status, viewsets
+from rest_framework import (
+    filters, mixins, serializers, status, views, viewsets,
+)
 from rest_framework.decorators import action
 from rest_framework.exceptions import MethodNotAllowed, PermissionDenied
 from rest_framework.mixins import CreateModelMixin, DestroyModelMixin
@@ -16,14 +18,17 @@ from rest_framework.viewsets import GenericViewSet
 from pretix.api.models import OAuthAccessToken
 from pretix.api.serializers.organizer import (
     DeviceSerializer, GiftCardSerializer, GiftCardTransactionSerializer,
-    OrganizerSerializer, SeatingPlanSerializer, TeamAPITokenSerializer,
-    TeamInviteSerializer, TeamMemberSerializer, TeamSerializer,
+    OrganizerSerializer, OrganizerSettingsSerializer, SeatingPlanSerializer,
+    TeamAPITokenSerializer, TeamInviteSerializer, TeamMemberSerializer,
+    TeamSerializer,
 )
 from pretix.base.models import (
     Device, GiftCard, GiftCardTransaction, Organizer, SeatingPlan, Team,
     TeamAPIToken, TeamInvite, User,
 )
+from pretix.base.settings import SETTINGS_AFFECTING_CSS
 from pretix.helpers.dicts import merge_dicts
+from pretix.presale.style import regenerate_organizer_css
 
 
 class OrganizerViewSet(viewsets.ReadOnlyModelViewSet):
@@ -414,3 +419,37 @@ class DeviceViewSet(mixins.CreateModelMixin,
             data=self.request.data
         )
         return inst
+
+
+class OrganizerSettingsView(views.APIView):
+    permission = 'can_change_organizer_settings'
+
+    def get(self, request, *args, **kwargs):
+        s = OrganizerSettingsSerializer(instance=request.organizer.settings, organizer=request.organizer)
+        if 'explain' in request.GET:
+            return Response({
+                fname: {
+                    'value': s.data[fname],
+                    'label': getattr(field, '_label', fname),
+                    'help_text': getattr(field, '_help_text', None)
+                } for fname, field in s.fields.items()
+            })
+        return Response(s.data)
+
+    def patch(self, request, *wargs, **kwargs):
+        s = OrganizerSettingsSerializer(
+            instance=request.organizer.settings, data=request.data, partial=True,
+            organizer=request.organizer
+        )
+        s.is_valid(raise_exception=True)
+        with transaction.atomic():
+            s.save()
+            self.request.organizer.log_action(
+                'pretix.organizer.settings', user=self.request.user, auth=self.request.auth, data={
+                    k: v for k, v in s.validated_data.items()
+                }
+            )
+        if any(p in s.changed_data for p in SETTINGS_AFFECTING_CSS):
+            regenerate_organizer_css.apply_async(args=(request.organizer.pk,))
+        s = OrganizerSettingsSerializer(instance=request.organizer.settings, organizer=request.organizer)
+        return Response(s.data)