def put(self, request, pk=None, format=None):
     place = self.get_object(pk)
     serializer = PlaceSerializer(place,data=request.data)
     if serializer.is_valid():
         serializer.save()
         return Response(serializer.data)
     return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
 def post(self, request, format=None):
     serializer = PlaceSerializer(data=request.data)
     if serializer.is_valid():
         serializer.save(owner=self.request.user)
         return Response(serializer.data, status=status.HTTP_201_CREATED)
     return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)