from openerp import api from openerp import models class Partner(models.Model): _inherit = 'res.partner' def read(self, fields=None, load='_classic_read'): res = super(Partner, self).read(fields=fields, load=load) if fields and 'message_ids' in fields: for vals in res: partner = self.browse(vals['id']) if not partner.is_company: continue domain = [('model', '=', 'res.partner'), ('res_id', 'in', [partner.id] + partner.child_ids.ids)] vals['message_ids'] = self.env['mail.message'].search(domain).ids return res