from odoo import models class ResPartner(models.Model): _inherit = "res.partner" def get_all_members_of_associate_member(self, associate_member_id): """ param : a member id if member is define somewhere as associate_member, return all members where my member in param is the associate_member return : list of members (res.partner) """ members = self.env["res.partner"].search( [("associate_member", "=", associate_member_id)] ) return members