views.py 文件源码

def get_invoice(request):
    reg_details = get_object_or_404(RegDetails, pk=request.GET.get('reg', ''))
    invoice = get_object_or_404(Invoice, reg_details=reg_details)
    file_details = 'inline; filename="invoice_' + str(invoice.pk) + '"'
    response = HttpResponse(content_type='application/pdf')
    response['Content-Disposition'] = file_details
    buffr = BytesIO()
    invoice_pdf = canvas.Canvas(buffr, pagesize=letter)
    generate_invoice(invoice_pdf, reg_details, invoice)
    invoice_pdf.showPage()
    invoice_pdf.save()
    pdf = buffr.getvalue()
    buffr.close()
    response.write(pdf)
    return response