partner-contact/base_continent/models/partner.py

# -*- coding: utf-8 -*-
# © 2014-2016 Camptocamp SA (Author: Romain Deheele)
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).

from openerp import models, fields


class Partner(models.Model):
    _inherit = 'res.partner'

    continent_id = fields.Many2one(
        'res.continent', related='country_id.continent_id',
        string='Continent', readonly=True, store=True)