account_voucher_number_invoicesupplier/models/account_voucher_supplier.py

# -*- coding: utf-8 -*-
##############################################################################
#
#    OpenERP, Open Source Management Solution
#    Copyright (C) 2004-2010 Tiny SPRL (<http://tiny.be>).
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Affero General Public License as
#    published by the Free Software Foundation, either version 3 of the
#    License, or (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU Affero General Public License for more details.
#
#    You should have received a copy of the GNU Affero General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################

from openerp import models, fields, tools, api

class account_voucher(models.Model):
    _name = 'account.voucher'
    _inherit = 'account.voucher'
    _description = 'Add extra data supplier_invoice_number to voucher recibo'

    supplier_invoice_number = fields.Char(string='Nº de factura del proveedor')

    @api.multi
    def proforma_voucher(self):
        res = super(AccountVoucher, self).proforma_voucher()
        if self.invoice_id:
            self.supplier_invoice_number = self.invoice_id.supplier_invoice_number
        return res