account.py

# -*- encoding: utf-8 -*-
##############################################################################
#    
#    OpenERP, Open Source Management Solution
#    Copyright (C) 2004-2009 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 osv import fields,osv

class Invoice(osv.osv):
    _inherit = 'account.invoice'

    _columns = {
        'to_export': fields.boolean('To export'),
        'to_update': fields.boolean('To update'),
        }

    _defaults = {
        'to_export': lambda *a: True,
        'to_update': lambda *a: False,
        }

    def write(self, cr, uid, ids, values, context=None):
        if not values:
            values = {}
        if "to_update" not in values:
            values['to_update'] = True
        return super(Invoice,self).write(cr, uid, ids, values, context)

Invoice()
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