def download_article(request, article_index):
article = Article.objects.get(id=article_index)
ArticleDownload.add_download(article)
file_manager = ArticleFilesManager(article_index)
filepath = file_manager.get_pdf_file_path()
wrapper = FileWrapper(file(filepath))
response = HttpResponse(wrapper, content_type='text/plain')
response['Content-Disposition'] = 'attachment; filename="%s"' % (str(article.id) + '.pdf')
response['Content-Length'] = os.path.getsize(filepath)
return response
