from odoo import models, fields class Equipment(models.Model): _inherit = "fsm.equipment" application_id = fields.Many2one( comodel_name="partner.application", tracking=1, domain="[('partner_id', '=', partner_id)]", ondelete="restrict", ) application_type_id = fields.Many2one( comodel_name="partner.application.type", related="application_id.application_type_id", readonly=True, )