eiru_reports_commission_by_seller/models/commission_by_seller.py

# -*- coding: utf-8 -*-
from openerp import models, fields, api

class DashboardObjective(models.Model):
    _name = 'salesman.commission'

    sale_type = fields.Selection([
        ('credito', 'Crédito'),
        ('contado', 'Contado')],
        string='Tipo de Venta')
    sale_commission = fields.Float(string="Comisión de Ventas (Porcentaje)")

    @api.onchange('user_id')
    def onchange_user_id(self):
        res = {}
        user = self.env['res.users'].search([('id','=', self.user_id.id)])
        self.store_id = user.store_id.id
        res = {'value' :{'store_id': self.store_id}}
        return res