混合苹果和橙子:3 odoo8

Mixing apples and oranges :3 odoo8

我正在尝试向员工发送通知,我创建了一个计算的 many2many 字段来获取合作伙伴 ID 并将它们传递给 mail.wizard.invite 模型的 partner_ids 字段。

这是我继承的 class:

from openerp import models, fields, api
class CustMailInvite(models.Model):
    _inherit = 'mail.wizard.invite'
    employee_ids=fields.Many2many('hr.employee','employees')

    @api.one
    @api.depends('employee_ids.user_id.partner_id')
    def compute_partner_ids(self):
        for a in self.employee_ids:
            if a.user_id:
                if a.user_id.partner_id:
                    self.partner_ids += a.user_id.partner_id.id


    partner_ids=fields.Many2many('res.partner',compute='compute_partner_ids')

我收到这个错误:

值错误

混合苹果和橙子:res.partner() + 5

# -*- coding: utf-8 -*-
from openerp import models, fields, api
class CustMailInvite(models.Model):
    _inherit = 'mail.wizard.invite'
    employee_ids=fields.Many2many('hr.employee','employees')

    @api.one
    @api.depends('employee_ids.user_id.partner_id')
    def compute_partner_ids(self):
        for a in self.employee_ids:
            if a.user_id:
                if a.user_id.partner_id:
                    self.partner_ids+=a.user_id.partner_id




    partner_ids=fields.Many2many('res.partner',compute='compute_partner_ids')

问题出在self.partner_ids+=a.user_id.partner_id.id这一行,我改成了self.partner_ids+=a.user_id.partner_id