Fixes

blog/views/api.py

 from django_filters.rest_framework import DjangoFilterBackend
+from rest_framework.decorators import action
+from rest_framework.permissions import IsAuthenticated, AllowAny
+from rest_framework.response import Response as Http_Response
 from rest_framework.viewsets import ModelViewSet
-from rest_framework.permissions import IsAuthenticated
-from rest_framework_extensions.mixins import NestedViewSetMixin
+from api.mixins import OwnerFieldMixin, DestroyToInvisibleMixin
 from api.permissions import IsSuperOrReadOnly, IsAuthOrReadOnly, IsStaffOrReadOnly
 #from blog.models import Post, Comment, Reply, Category, Tag, PostTag
 from blog.models import Post, Category, Tag, PostTag
@@ -11,7 +13,7 @@ from blog.serializers import PostSerializer, CategorySerializer, TagSerializer,
 ############################################################
 #REST API for Post
 ############################################################
-class PostViewSet(NestedViewSetMixin, ModelViewSet):
+class PostViewSet(DestroyToInvisibleMixin, OwnerFieldMixin, ModelViewSet):
     #Everyone can read, just staff user can modificate
     permission_classes = (IsStaffOrReadOnly,)
     queryset = Post.objects.filter(visible=True)
@@ -20,6 +22,15 @@ class PostViewSet(NestedViewSetMixin, ModelViewSet):
     filter_backends = (DjangoFilterBackend,)
     filterset_fields = ('slug','category','tags__tag')
 
+    @action(detail=True, methods=['post'], permission_classes=[AllowAny])
+    def increase_rating(self, request, pk=None):
+        post = self.get_object()
+        data = {'rating': post.rating + 1}
+        serializer = self.get_serializer(post, data=data, partial=True)
+        serializer.is_valid(raise_exception=True)
+        self.perform_update(serializer)
+        return Http_Response(serializer.data)
+
 """
 ############################################################
 #REST API for Comment
@@ -64,7 +75,7 @@ class ReplyViewSet(NestedViewSetMixin, ModelViewSet):
 ############################################################
 #REST API for Category
 ############################################################
-class CategoryViewSet(NestedViewSetMixin, ModelViewSet):
+class CategoryViewSet(DestroyToInvisibleMixin, ModelViewSet):
     permission_classes = (IsStaffOrReadOnly, )
     queryset = Category.objects.filter(visible=True)
     serializer_class = CategorySerializer
@@ -75,7 +86,7 @@ class CategoryViewSet(NestedViewSetMixin, ModelViewSet):
 ############################################################
 #REST API for Tag
 ############################################################
-class TagViewSet(NestedViewSetMixin, ModelViewSet):
+class TagViewSet(ModelViewSet):
     permission_classes = (IsStaffOrReadOnly, )
     queryset = Tag.objects.all()
     serializer_class = TagSerializer
@@ -86,7 +97,7 @@ class TagViewSet(NestedViewSetMixin, ModelViewSet):
 ############################################################
 #REST API for PostTag
 ############################################################
-class PostTagViewSet(NestedViewSetMixin, ModelViewSet):
+class PostTagViewSet(ModelViewSet):
     permission_classes = (IsStaffOrReadOnly, )
     queryset = PostTag.objects.all()
     serializer_class = PostTagSerializer