eiru_delivery_baco/models/sale_order.py

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

class SaleOrder(models.Model):
    _inherit = 'sale.order'

    is_delivery = fields.Boolean(string='Delivery?')
    delivery_type = fields.Selection([
        ('local', 'Local'),
        ('envio', 'Envio al Interior')],
        string='Tipo de delivery', default='local')

    @api.multi
    def order_process_now(self):
        """
        Confirms order and creates and validates invoice, confirms pickings.
        """
        for sale in self:
            sale.action_button_confirm()
            inv_id = sale.action_invoice_create()
            if inv_id:
                inv = self.env['account.invoice'].browse(inv_id)
                inv.write({
                    'is_delivery':self.is_delivery,
                    'delivery_type':self.delivery_type,
                })

class AccountInvoice(models.Model):
    _inherit = 'account.invoice'

    is_delivery = fields.Boolean(string='Delivery?')
    delivery_type = fields.Selection([
        ('local', 'Local'),
        ('envio', 'Envio al Interior')],
        string='Tipo de delivery', default='local')