Error sending a file using Django - file turns out empty

Question

This is my views.py files:

from django.http import HttpResponse

def render(request):
    response = HttpResponse(content_type='application/pdf')
    response['Content-Disposition'] = 'attachment; filename="somefilename.pdf"'
    response['X-Sendfile'] = '/files/filename.pdf'
    # path relative to views.py
    return response

When I run the server and request

http://localhost:8080/somestring

I get an empty file called somefilename.pdf. I suspect that there is some crucial part missing in render.

The other parts of this app outside of views.py are correct to my understanding.

Answer 1

Here is the code that solved my problem:

from django.http import HttpResponse
from wsgiref.util import FileWrapper

def render(request): 
    response = HttpResponse(FileWrapper(open('file.pdf', 'rb')), content_type='application/pdf')
    response['Content-Disposition'] = 'attachment; filename="somefilename.pdf"'

    return response