odoo 清除所有运行数据
测试odoo，如果需要一个干净的db。经常需要清除掉所有业务数据。做如下操作，较为方便

1：建立一个服务器动作，动作的python代码入下。 然后新建一个菜单，菜单动作关联到 这个动作。需要清空db，点击这个菜单就OK啦。

 to_removes = [
    ['procurement.order',],
     ['purchase.order.line',],
     ['purchase.order',],

    ['stock.quant',],
     ['stock.move',],
    ['stock.pack.operation',],
    ['stock.picking',],
     ['stock.inventory.line',],
    ['stock.inventory',],
    ['stock.quant.package',],
     ['stock.quant.move.rel',],
    ['stock.production.lot',],
    ['stock.fixed.putaway.strat',],
    ['mrp.production.workcenter.line',],
    ['mrp.production',],
    ['mrp.production.product.line',],
    ['sale.order.line',],
     ['sale.order',],
     ['pos.order.line',],
     ['pos.order',],

     ['account.voucher.line',],
     ['account.voucher',],
     ['account.invoice',],
     ['account.partial.reconcile',],
     ['account.move',],
  ]

  def remove_data(cr):
    try:
        for line in to_removes :
             obj_name = line[0]
             obj = self.pool.get(obj_name)
             if obj and obj._table_exist:
                 sql = "delete from %s" % obj._table
                 cr.execute( sql)


     except Exception, e:
         raise Warning(e)

     return True

  remove_data(cr,)