How to initialize a FormCollection with initial data that contains files?

[luisoibarra]

Hi,

I need to be able to store the file information between different form pages, right now I encode the UploadedFile and store it in the default django sessions middleware, then if I go back to this page I deserialize the UploadedFile and pass this information as initial argument in the form collection. With non files fields works, but with files I have an error.

Summary, how to serialize and deserialize files to be able to pass the information to the form collection's initial argument.

Example of the process, the deserialize and serialize functions converts the UploadedFile instance into a serializable dictionary and then that dictionary is converted back to the IploadedFile instance.

class ServicesDetailsView(FormCollectionView):
    def get_collection_kwargs(self):
          kwargs['initial'] = deserialize_with_files(self.request.session[self.SESSION_KEY])

    def get_success_url(self):
        if self.cleaned_data:
            # Put the session key
            self.request.session[self.SESSION_KEY] = serialize_with_files(self.cleaned_data)

[jrief]

If you use the FileField together with the provided widget UploadedFileInput in one of your forms, this should work out of the box. How is your code structured (Please share a link to your repo)?