from odoo import api, models class SubscriptionRequest(models.Model): _inherit = "subscription.request" _majority = 18 def get_eater_vals(self, partner, share_product_id): vals = {} eater = share_product_id.eater if partner.is_company or partner.age < self._majority: eater = "eater" vals["eater"] = eater return vals @api.one def validate_subscription_request(self): invoice = super( SubscriptionRequest, self ).validate_subscription_request()[0] partner = invoice.partner_id vals = self.get_eater_vals(partner, self.share_product_id) partner.write(vals) return invoice