cd_partner.py

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

_logger = logging.getLogger(__name__)


class Partner(models.Model):
    _inherit = 'res.partner'
    partner_group_id = fields.Many2one('res.partner.group')
    has_late_bills = fields.Boolean('Has Late Bills', compute='compute_has_late_bills')

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