views.py 文件源码

def get_reg_note(request):
    reg_details = get_object_or_404(RegDetails, pk=request.GET.get('reg', ''))
    try:
        invoice = Invoice.objects.get(reg_details=reg_details)
    except Invoice.DoesNotExist:
        invoice = None
    inv_num = str(invoice.pk) if invoice else 'free'
    file_details = 'inline; filename="reg_note_' + inv_num + '"'
    response = HttpResponse(content_type='application/pdf')
    response['Content-Disposition'] = file_details
    buffr = BytesIO()
    note_pdf = canvas.Canvas(buffr, pagesize=letter)
    generate_reg_note(note_pdf, reg_details, invoice)
    note_pdf.showPage()
    note_pdf.save()
    pdf = buffr.getvalue()
    buffr.close()
    response.write(pdf)
    return response