odoo16/addons/resource/models/res_users.py

# -*- coding: utf-8 -*-
# Part of Odoo. See LICENSE file for full copyright and licensing details.

from odoo import fields, models


class ResUsers(models.Model):
    _inherit = 'res.users'

    resource_ids = fields.One2many(
        'resource.resource', 'user_id', 'Resources')
    resource_calendar_id = fields.Many2one(
        'resource.calendar', 'Default Working Hours',
        related='resource_ids.calendar_id', readonly=False)

    def write(self, vals):
        rslt = super().write(vals)

        # If the timezone of the admin user gets set on their first login, also update the timezone of the default working calendar
        if (vals.get('tz') and len(self) == 1 and not self.env.user.login_date
            and self.env.user == self.env.ref('base.user_admin', False) and self == self.env.user):
            self.resource_calendar_id.tz = vals['tz']

        return rslt