单击按钮时，如何触发 jquery 数据表 fnServerData 以通过 AJAX 更新表? [英] how can I trigger jquery datatables fnServerData to update a table via AJAX when I click a button?

问题描述

我将数据表插件与服务器端数据一起使用，并使用 AJAX 更新表.

I'm using the datatables plugin with server-side data and am updating the table using AJAX.

我的数据表设置如下所示:

My dataTables setup looks like this:

tblOrders = parameters.table.dataTable( {
    "sDom": '<"S"f>t<"E"lp>',
    "sAjaxSource": "../file.cfc",
    "bServerSide": true,
    "sPaginationType": "full_numbers",  
    "bPaginate": true,
    "bRetrieve": true,
    "bLengthChange": false,         
    "bAutoWidth": false,
    "aaSorting": [[ 10, "desc" ]],      
    "aoColumns": [                      
        ... columns 
                  ],
    "fnInitComplete": function(oSettings, json) {
        // trying to listen for updates
        $(window).on('repaint_orders', function(){
            $('.tbl_orders').fnServerData( sSource, aoData, fnCallback, oSettings );
            });
        },
    "fnServerData": function ( sSource, aoData, fnCallback, oSettings ) {
        var page = $(oSettings.nTable).closest('div:jqmData(wrapper="true")')
        aoData.push(
            { "name": "returnformat", "value": "plain"},
            { "name": "s_status", "value": page.find('input[name="s_status"]').val() },
            { "name": "s_bestellnr", "value": page.find('input[name="s_bestellnr"]').val() },
            { "name": "form_submitted", "value": "dynaTable" }
            );
        $.ajax({ "dataType": 'json', "type": "POST", "url": sSource, "data": aoData , "success": fnCallback });
        }

我有一些用于过滤数据服务器端的自定义字段，我将这些字段与 AJAX 请求一起推送.问题是，我不知道如何从表外部触发 JSON 请求.如果用户输入过滤器，fnServerData 会触发并更新表.但是，如果用户选择表外的控件，我不知道如何触发 fnServerData 函数.

I have some custom fields for filtering the data server-side, which i'm pushing along with the AJAX request. The problem is, I don't know how to trigger a JSON request from outside of the table. If the user types into the filter, fnServerData fires and updates the table. However, if the user picks a control outside of the table, I have no idea how to trigger the fnServerData function.

现在我正在尝试在 fnInitComplete 中触发和监听一个自定义事件.虽然我可以检测到用户选择自定义过滤条件，但我缺少 fnServerData 正确触发所需的所有参数.

Right now I'm trying with a custom event I'm firing and listening to in fnInitComplete. While I can detect the user picking a custom filtering criteria, I'm missing all parameters needed for fnServerData to trigger correctly.

问题:
有没有办法从实际 dataTables 表之外的按钮触发 fnServerData?

Question:
Is there a way to trigger fnServerData from a button outside of the actual dataTables table?

我想我可以尝试在过滤器中添加一个空格，但这不是一个真正的选择.

I guess I could try to add a space to the filter, but this is not really an option.

感谢您的意见！

问题

推荐答案

我前段时间发现了这个脚本(所以我不记得它来自哪里 :( 以及归功于谁 :'( ) 但在这里:

I found this script some time ago (so I don't remember where it came from :( and who to credit for it :'( ) but here :

$.fn.dataTableExt.oApi.fnReloadAjax = function (oSettings, sNewSource, fnCallback, bStandingRedraw) {
    if (typeof sNewSource != 'undefined' && sNewSource != null) {
        oSettings.sAjaxSource = sNewSource;
    }
    this.oApi._fnProcessingDisplay(oSettings, true);
    var that = this;
    var iStart = oSettings._iDisplayStart;
    var aData = [];

    this.oApi._fnServerParams(oSettings, aData);

    oSettings.fnServerData(oSettings.sAjaxSource, aData, function (json) {
        /* Clear the old information from the table */
        that.oApi._fnClearTable(oSettings);

        /* Got the data - add it to the table */
        var aData = (oSettings.sAjaxDataProp !== "") ?
            that.oApi._fnGetObjectDataFn(oSettings.sAjaxDataProp)(json) : json;

        for (var i = 0; i < aData.length; i++) {
            that.oApi._fnAddData(oSettings, aData[i]);
        }

        oSettings.aiDisplay = oSettings.aiDisplayMaster.slice();
        that.fnDraw();

        if (typeof bStandingRedraw != 'undefined' && bStandingRedraw === true) {
            oSettings._iDisplayStart = iStart;
            that.fnDraw(false);
        }

        that.oApi._fnProcessingDisplay(oSettings, false);

        /* Callback user function - for event handlers etc */
        if (typeof fnCallback == 'function' && fnCallback != null) {
            fnCallback(oSettings);
        }
    }, oSettings);
}

添加BEFORE 调用数据表初始化函数.然后你可以像这样调用重新加载:

Add that BEFORE you call the datatable initialization function. then you can just call the reload like this:

$("#userFilter").on("change", function () {
        oTable.fnReloadAjax(); // In your case this would be 'tblOrders.fnReloadAjax();'
    });

userFilter 是下拉列表的 ID，因此当它更改时，它会重新加载表的数据.我只是将其添加为示例，但您可以在任何事件上触发它.

userFilter is an ID for a dropdown, so when it changes, it reloads the data for the table. I just added this as an example but you can trigger it on any event.

这篇关于单击按钮时，如何触发 jquery 数据表 fnServerData 以通过 AJAX 更新表?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！