from odoo import models


class PosSession(models.Model):
    _inherit = 'pos.session'

    def _get_message_author(self):
        """Override to read employee partner with sudo() to avoid res.partner
        access errors when the cashier's allowed companies don't include the
        company_id set on work_contact_id (caused by hr_multi_company_employee
        assigning employees to branch companies).
        """
        if not self.employee_id:
            return None

        # Use sudo() to bypass multi-company partner rule when reading
        # the employee's work_contact_id or user partner for message posting.
        employee = self.employee_id.sudo()
        if related_partners := employee._get_related_partners():
            return related_partners[0]

        return self.sudo().user_id.partner_id