Hi Usman,

To generate barcode, qrcode or any code in odoo, odoo provides default feature to do this.

There is one controller which will generate barcode. So what you need to do is, you need to call that controller from your create method.

Just search, controller "/report/barcode"

I hope it will useful for you.

Regards

Haresh Kansara

class ProductAutoBarcode(models.Model): 

 _inherit = 'product.product'

 @api.model 

 def create(self, vals): 

  ean = generate_ean(str(res.id))

  vals.update({'barcode': ean})

  return super(ProductAutoBarcode, self).create(vals)