Nesting APIView breaks request if request.FILES property is called - django

Question

We have an APIView (FooView) that can be accessed directly through a URL.
We have another APIView APIKeyImportView that will reuse FooView depending of file name (it is done this way for compatibility with an API).
However when request.FILES is accessed from APIKeyImportView to look at the file names, request.FILES becomes empty in FooView.
It appears that accessing request.FILES will makes it un-useable by the nested view.
Is there a way around this?
class FooView(APIView):
permission_classes = (permissions.IsAuthenticated,)
def post(self, request, vendor):
file = request.FILES.get('file')
if not file:
return Response(status=status.HTTP_400_BAD_REQUEST)
return Response()
class APIKeyImportView(APIView):
permission_classes = (permissions.IsAuthenticated,)
authentication_classes = (ApiKeyAuthentication,)
def post(self, request):
file = request.FILES.get('file')
if not file:
return Response(status=status.HTTP_400_BAD_REQUEST)
name = file.name
if name.startswith('FOO'):
return FooView.as_view()(request=request)
else:
return Response(status=status.HTTP_400_BAD_REQUEST)
Removing the validation on request.Files in APIKeyImportView will make it accessible in FooView but it kinds of miss the point.
Inspecting request in PyCharm will also make it un-useable in FooView since the debugger will call the properties.
class APIKeyImportView(APIView):
permission_classes = (permissions.IsAuthenticated,)
authentication_classes = (ApiKeyAuthentication,)
def post(self, request):
return FooView.as_view()(request=request)
These solutions are not working:
django modifying the request object
Tested on the following versions:
Django 1.9.5
django-rest-framework 3.3.3
Python 3.4.2

Answer 1

A workaround I found was to pass request.FILES but I am not sure if it has side effects
class FooView(APIView):
permission_classes = (permissions.IsAuthenticated,)
_files = None
#property
def request_files(self):
if self._files:
return self._files
return self.request.FILES
def post(self, request, vendor):
file = self.request_files.get('file')
if not file:
return Response(status=status.HTTP_400_BAD_REQUEST)
return Response()
class APIKeyImportView(APIView):
permission_classes = (permissions.IsAuthenticated,)
authentication_classes = (ApiKeyAuthentication,)
def post(self, request):
file = request.FILES.get('file')
if not file:
return Response(status=status.HTTP_400_BAD_REQUEST)
name = file.name
if name.startswith('FOO'):
# Passing FILES here
return FooView.as_view(_files=request.FILES)(request=request)
else:
return Response(status=status.HTTP_400_BAD_REQUEST)