diff --git a/courses/views.py b/courses/views.py
index a560fba..53a9822 100644
--- a/courses/views.py
+++ b/courses/views.py
@@ -95,6 +95,8 @@ class UpdateLessonView(APIView):
     renderer_classes = (JSONRenderer, BrowsableAPIRenderer)
     parser_classes = (MultiPartParser,)
 
+    #TODO убрать эти костыли
+
     @staticmethod
     def bool_transformer(val):
         if val == 'false':
@@ -103,16 +105,24 @@ class UpdateLessonView(APIView):
             return True
         return val
 
+    @staticmethod
+    def none_transformer(val):
+        if val == 'null':
+            return None
+        if val == 'undefined':
+            return None
+        return val
+
     def post(self, request):
-        lesson_token = request.POST.get('token', None)
-        sort = request.POST.get('sort', None)
-        topic_id = request.POST.get('topic', None)
-        title = request.POST.get('title', None)
-        description = request.POST.get('description', None)
-        video = request.POST.get('video', None)
-        materials_url = request.POST.get('materials_url', '')
-        free = self.bool_transformer(request.POST.get('free', None))
-        is_hm = self.bool_transformer(request.POST.get('is_hm', None))
+        lesson_token = self.none_transformer(request.POST.get('token', None))
+        sort = self.none_transformer(request.POST.get('sort', None))
+        topic_id = self.none_transformer(request.POST.get('topic', None))
+        title = self.none_transformer(request.POST.get('title', None))
+        description = self.none_transformer(request.POST.get('description', None))
+        video = self.none_transformer(request.POST.get('video', None))
+        materials_url = self.none_transformer(request.POST.get('materials_url', ''))
+        free = self.none_transformer(self.bool_transformer(request.POST.get('free', None)))
+        is_hm = self.none_transformer(self.bool_transformer(request.POST.get('is_hm', None)))
 
         if topic_id is None:
             return Response("topic не передан", status=400)