cd_partner_group.py

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

_logger = logging.getLogger(__name__)


class PartnerGroup(models.Model):
    _name = 'res.partner.group'
    name = fields.Char('Group Name')
    partner_ids = fields.One2many('res.partner', 'partner_group_id', 'Partners')
    has_late_bills = fields.Boolean('Has Late Bills', compute='compute_has_late_bills')

    @api.multi
    @api.depends('partner_ids.has_late_bills', 'partner_ids.invoice_ids')
    def compute_has_late_bills(self):
        """
        Computes if this partner group has late bills based on
        if any of the partners in the group have late bills.
        """
        for group in self:
            _logger.info('DEPENDS_TEST: computing late bills for partner group ' + str(group.id))
            for partner in group.partner_ids:
                if partner.has_late_bills:
                    group.has_late_bills = True
                    return
            group.has_late_bills = False