How to create QR bar automatically for my module?

Question

I am trying to create user module with QR id generation. I have created my module. I want add QR code generation in my module automatically. Tell me, what do I do?

python method(part of the python coding):

 def barcode(self, cr, uid, ids, context=None):
   qr = QRCode(version=20, error_correction=ERROR_CORRECT_L)
   qr.add_data("http://sample:/")
   qr.make()
   im = qr.make_image()
   im.save("sample.png")

while i am running my application the following error is shown.

File "/usr/local/lib/python2.7/dist-packages/qrcode/image/pil.py", line 29, in save
    self._img.save(stream, kind)
  File "/usr/lib/python2.7/dist-packages/PIL/Image.py", line 1433, in save
    fp = __builtin__.open(fp, "wb")
IOError: [Errno 13] Permission denied: 'sample.png'

how to clear permission error

Answer 1

i am giving file permission to openerp user. It is corrected