apps/catalogue/ebook_utils.py

   1 # -*- coding: utf-8 -*-
   2 from catalogue.models import Book
   3 from librarian import DocProvider
   4 from django.http import HttpResponse
   5
   6
   7 class RedakcjaDocProvider(DocProvider):
   8     """Used for getting books' children."""
   9
  10     def by_slug(self, slug):
  11         return Book.objects.get(dc_slug=slug).xml_file
  12
  13
  14 def serve_file(file_path, name, mime_type):
  15     def read_chunks(f, size=8192):
  16         chunk = f.read(size)
  17         while chunk:
  18             yield chunk
  19             chunk = f.read(size)
  20
  21     response = HttpResponse(mimetype=mime_type)
  22     response['Content-Disposition'] = 'attachment; filename=%s' % name
  23     with open(file_path) as f:
  24         for chunk in read_chunks(f):
  25             response.write(chunk)
  26     return response