views.py

#@cache_page(86400)
def page_pdf(request, lccn, date, edition, sequence):
    title = get_object_or_404(models.Title, lccn=lccn)
    _year, _month, _day = date.split("-")
    try:
        _date = datetime.date(int(_year), int(_month), int(_day))
    except ValueError, e:
        raise Http404
    try:
        issue = title.issues.get(date_issued=_date, edition=edition)
    except models.Issue.DoesNotExist, e:
        raise Http404
    try:
        page = issue.pages.get(sequence=int(sequence))
    except models.Page.DoesNotExist, e:
        raise Http404
    f = file(page.pdf_abs_filename)
    #content = f.read()
    #return HttpResponse(content, mimetype='application/pdf')
    response = HttpResponse(wsgiref.util.FileWrapper(f))
    response['Content-Type'] = 'application/pdf'
    response['Content-Disposition'] = 'Attachment; filename=file.pdf'
    return response

    return HttpResponse(content, mimetype='application/pdf')
    #return HttpResponse(wsgiref.util.FileWrapper(f), mimetype='ap