account_move_line.py

# -*- coding: utf-8 -*-
##############################################################################
#
#    Author: Vincent Renaville (Camptocamp)
#    Copyright 2010-2014 Camptocamp SA
#
#    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, api
import openerp.addons.decimal_precision as dp


class AccountMoveLine(models.Model):
    _inherit = "account.move.line"

    @api.multi
    @api.depends('credit', 'debit')
    def _line_balance(self):
        for line in self:
            line.line_balance = line.debit - line.credit

    line_balance = fields.Float(
        compute='_line_balance', string='Balance', store=True,
        digits=dp.get_precision('Account'))