当ajax调用失败时,如何停止Bootstrap x-editable更新已编辑的字

我正在传递一个函数作为url.

$('.order-price').editable({
    type: "text",title: "Order Price",url: function (params) {
        var orderID = $(this).data("order-id");
        var data = "OrderID=" + orderID + "&Price=" + params.value;

        $.ajax({
            type: 'post',url: '/Trades/SetOrderPrice',data: data,async: false,error: function (xhr,ajaxOptions,thrownError) {
                return false;
                // Do I return something here instead of false?

            }

        })
    }
});