save Company creator

companies/views.py

@@ -18,6 +18,9 @@ class CompanyViewSet(viewsets.ModelViewSet):
       serializer_class = CompanySerializer
       permission_classes = [IsAuthenticatedOrReadOnly, IsCreator]
 
+      def perform_create(self, serializer):
+        serializer.save(creator=self.request.user)
+
 
 @api_view(['GET',])
 @permission_classes([IsAuthenticated,])