vertical-cooperative/easy_my_coop_eater/models/coop.py

# -*- coding: utf-8 -*-
from openerp import api, fields, models

class subscription_request(models.Model):
    _inherit='subscription.request'
    
    def get_eater_vals(self, partner, share_product_id):
        vals = {}
        eater = share_product_id.eater
        
        if partner.is_company or partner.age < 18: 
            eater = 'eater'
        
        vals['eater'] = eater
        vals['customer'] = share_product_id.customer
        
        return vals
    
    @api.one
    def validate_subscription_request(self):

        invoice = super(subscription_request, self).validate_subscription_request()[0]
        partner = invoice.partner_id
        
        vals = self.get_eater_vals(partner, self.share_product_id)
        partner.write(vals)
        
        return invoice