django rest framework return file

Question

I have the following view in my views.py -

class FilterView(generics.ListAPIView):
    model = cdx_composites_csv

    def get(self, request, format=None):
         


        

Answer 1

I don't know why I had to do this - may be something internal to Django Rest Framework that doesn't allow putting custom methods onto format?

I simply changed it to the following -

if fileformat == 'raw':
    zip_file = open('C:\temp\core\files\CDX_COMPOSITES_20140626.zip', 'rb')
    response = HttpResponse(FileWrapper(zip_file), content_type='application/zip')
    response['Content-Disposition'] = 'attachment; filename="%s"' % 'CDX_COMPOSITES_20140626.zip'
    return response

Then in my URL just hit with the new value and it works fine. I'd love to know why I can't use format though to serve a file.

Answer 2

Try using FileWrapper:

from django.core.servers.basehttp import FileWrapper

...

if format == 'raw':
    zip_file = open('C:\temp\core\files\CDX_COMPOSITES_20140626.zip', 'rb')
    response = HttpResponse(FileWrapper(zip_file), content_type='application/zip')
    response['Content-Disposition'] = 'attachment; filename="%s"' % 'CDX_COMPOSITES_20140626.zip'
    return response
...

Also, I would use application/zip instead of application/force-download.