from odoo import api, models class PartnerContractCustomer(models.Model): _name = "partner.contract.customer" _inherit = ["partner.contract.customer", "docx.template.mixin"] @api.onchange("profile_id") def _onchange_profile_id_set_docx_template(self): for rec in self: if rec.profile_id and not rec.docx_template_id and rec.profile_id.docx_template_id: rec.docx_template_id = rec.profile_id.docx_template_id