I'd like to add a commission to sales modules, but when I edit I don't get any result.
The code I am duplicating is this:

def _amount_line_tax(self, cr, uid, line, context=None):
val = 0.0
for c in self.pool.get('account.tax').compute_all(cr, uid, line.tax_id, line.price_unit * (1+(line.discount or 0.0)/100.0), line.product_uom_qty, line.order_id.partner_invoice_id.id, line.
product_id, line.order_id.partner_id)['taxes']:
val += c.get('amount', 0.0)
return val

def _amount_all(self, cr, uid, ids, field_name, arg, context=None):
cur_obj = self.pool.get('res.currency')
res = {}
for order in self.browse(cr, uid, ids, context=context):
res[order.id] = {
'amount_untaxed': 0.0,
'amount_tax': 0.0,
'amount_total': 0.0,
}
val = val1 = 0.0
cur = order.pricelist_id.currency_id
for line in order.order_line:
val1 += line.price_subtotal
val += self._amount_line_tax(cr, uid, line, context=context)
res[order.id]['amount_tax'] = cur_obj.round(cr, uid, cur, val) res[order.id]['amount_untaxed'] = cur_obj.round(cr, uid, cur, val1)
res[order.id]['amount_total'] = res[order.id]['amount_untaxed'] + res[order.id]['amount_tax']
return res

def _amount_line_prodfee(self, cr, uid, line, context=None):
val = 0.0
for c in self.pool.get('account.tax').compute_all(cr, uid, line.tax_id, line.price_unit * (1+(line.discount or 0.0)/100.0), line.product_uom_qty, line.order_id.partner_invoice_id.id, line.
product_id, line.order_id.partner_id)['taxes']:
val += c.get('amount', 0.0)
return val


def _amount_prodfee(self, cr, uid, ids, field_name, arg, context=None):
cur_obj = self.pool.get('res.currency')
res = {}
for order in self.browse(cr, uid, ids, context=context):
res[order.id] = {
'amount_nofee': 0.0,
'amount_prodfee': 0.0,
'amount_totalfee': 0.0,
}
val = val1 = 0.0
cur = order.pricelist_id.currency_id
for line in order.order_line:
val1 += line.price_subtotal
val += self._amount_line_tax(cr, uid, line, context=context)
res[order.id]['amount_nofee'] = cur_obj.round(cr, uid, cur, val)
res[order.id]['amount_prodfee'] = cur_obj.round(cr, uid, cur, val1)
res[order.id]['amount_totalfee'] = res[order.id]['amount_prodfee'] + res[order.id]['amount_nofee']
return res


I have added below the definitions of amount_nofee, amount_prodfee and amount_totalfee and I have inserted all of them in the db.
Where do I mistake?

Did you see these http://apps.openerp.com/?text_search=commission ?

Thank you eLBati, but I'd like to add a commission to a product, managed @company layer, and explicit it inside the report (I know my customer is crazy).
Now I'd like to know: if I modify the sale.py and then I restart openerp-server is enough?
Or do I have to compile something?
Thanks a lot...

If you modify code, you must update the module.

Either by specifying -d database -u modulename while starting the openerp server, or in OpenERP on the modules form with the button Schedule Upgrade.