diff --git a/api/v1/__init__.py b/api/v1/__init__.py
index 45967a33..a8299561 100644
--- a/api/v1/__init__.py
+++ b/api/v1/__init__.py
@@ -43,3 +43,20 @@ class ExtendViewSet(object):
 
 class ExtendedModelViewSet(ExtendViewSet, viewsets.ModelViewSet):
     pass
+
+
+class BothListFormatMixin:
+
+    def list(self, request, *args, **kwargs):
+        queryset = self.filter_queryset(self.get_queryset())
+
+        if request.query_params.get('page'):
+            page = self.paginate_queryset(queryset)
+            if page is not None:
+                serializer = self.get_serializer(page, many=True)
+                return self.get_paginated_response(serializer.data)
+            else:
+                return Response({'results': []})
+
+        serializer = self.get_serializer(queryset, many=True)
+        return Response(serializer.data)
diff --git a/api/v1/views.py b/api/v1/views.py
index 130468ec..f43ca18a 100644
--- a/api/v1/views.py
+++ b/api/v1/views.py
@@ -10,7 +10,7 @@ from rest_framework.decorators import (detail_route, list_route, action,
 from rest_framework.response import Response
 from rest_framework.settings import api_settings
 
-from . import ExtendedModelViewSet
+from . import ExtendedModelViewSet, BothListFormatMixin
 
 from .serializers.config import ConfigSerializer
 from .serializers.course import (
@@ -213,7 +213,7 @@ class LikeViewSet(ExtendedModelViewSet):
         return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)
 
 
-class CategoryViewSet(ExtendedModelViewSet):
+class CategoryViewSet(BothListFormatMixin, ExtendedModelViewSet):
     queryset = Category.objects.order_by('-id')
     serializer_class = CategorySerializer
     search_fields = ('title',)
@@ -221,7 +221,7 @@ class CategoryViewSet(ExtendedModelViewSet):
     # permission_classes = (IsAdmin,)
 
 
-class CourseViewSet(ExtendedModelViewSet):
+class CourseViewSet(BothListFormatMixin, ExtendedModelViewSet):
     queryset = Course.objects.select_related(
         'author', 'category', 'cover', 'gallery',
     ).prefetch_related(
@@ -243,20 +243,6 @@ class CourseViewSet(ExtendedModelViewSet):
     #     'delete': IsAdmin,
     # }
 
-    def list(self, request, *args, **kwargs):
-        queryset = self.filter_queryset(self.get_queryset())
-
-        if request.query_params.get('page'):
-            page = self.paginate_queryset(queryset)
-            if page is not None:
-                serializer = self.get_serializer(page, many=True)
-                return self.get_paginated_response(serializer.data)
-            else:
-                return Response({'results': []})
-
-        serializer = self.get_serializer(queryset, many=True)
-        return Response(serializer.data)
-
     @list_route(methods=['get'])
     def draft(self, request):
         drafts = Course.objects.filter(author=request.user, status=Course.DRAFT)
@@ -735,7 +721,7 @@ class FAQViewSet(ExtendedModelViewSet):
     serializer_class = FAQSerializer
 
 
-class BonusesViewSet(ExtendedModelViewSet):
+class BonusesViewSet(BothListFormatMixin, ExtendedModelViewSet):
     queryset = UserBonus.objects.all()
     serializer_class = UserBonusCreateSerializer
     serializer_class_map = {
@@ -752,15 +738,3 @@ class BonusesViewSet(ExtendedModelViewSet):
         'referral__referral__first_name',
         'referral__referral__last_name',
     )
-
-    def list(self, request, *args, **kwargs):
-        queryset = self.filter_queryset(self.get_queryset())
-
-        if request.query_params.get('page'):
-            page = self.paginate_queryset(queryset)
-            if page is not None:
-                serializer = self.get_serializer(page, many=True)
-                return self.get_paginated_response(serializer.data)
-
-        serializer = self.get_serializer(queryset, many=True)
-        return Response(serializer.data)
diff --git a/apps/course/management/commands/fix_access_expire.py b/apps/course/management/commands/fix_access_expire.py
index cf15f5ff..2570e8e0 100644
--- a/apps/course/management/commands/fix_access_expire.py
+++ b/apps/course/management/commands/fix_access_expire.py
@@ -23,3 +23,18 @@ class Command(BaseCommand):
             payment.save()
 
 
+'''
+TEST
+
+select c.id, c.title, cp.access_duration
+from 
+	course_course c,
+	(select cp.course_id, count(*), cp.access_expire - date_trunc('day', p.created_at) access_duration
+	from payment_coursepayment cp,
+		payment_payment p
+	where p.id = cp.payment_ptr_id and p.status = 0
+	group by cp.course_id, cp.access_expire - date_trunc('day', p.created_at)) cp
+where cp.course_id = c.id
+order by c.title
+'''
+
diff --git a/web/src/components/CourseRedactor.vue b/web/src/components/CourseRedactor.vue
index 3e319cea..5bc06549 100644
--- a/web/src/components/CourseRedactor.vue
+++ b/web/src/components/CourseRedactor.vue
@@ -892,7 +892,7 @@
             promises.push(cats);
             cats.then((response) => {
                     if (response.data) {
-                        this.categoryOptions = response.data.results;
+                        this.categoryOptions = response.data;
                     }
                 });