Question

如何在jquery的datatable插件中获取列id我需要用于数据库更新的列id。

Answer 1

<强> fnGetPosition

获取特定的数组索引来自它的DOM元素的单元格。最好的与fnGetData（）结合使用。

输入参数：

nNode：您要查找的节点的位置。我要么是'TR' 表格中的行或“TD”单元格。该 return参数依赖于此输入

返回参数：

int或array [int，int，int]：if 节点是表行（TR）然后是返回值将是一个整数 aoData中行的索引宾语。如果节点是表格单元格（TD）那么返回值将是一个数组有[aoData索引行，列 index（折扣隐藏行），列 index（包括隐藏的行）]。

代码示例：

$(document).ready(function() {
    $('#example tbody td').click( function () {
        /* Get the position of the current data from the node */
        var aPos = oTable.fnGetPosition( this );

        /* Get the data array for this row */
        var aData = oTable.fnGetData( aPos[0] );

        /* Update the data array and return the value */
        aData[ aPos[1] ] = 'clicked';
        this.innerHTML = 'clicked';
    } );

    /* Init DataTables */
    oTable = $('#example').dataTable();
} );

来自datatables.net

Answer 2

我认为从datatables.net网站上面的股票回答没有帮助，并没有回答这个问题。

我相信neko_ime想要获取与所选项的列对应的列标题值（因为这可能与表中的列名相同，或者用户在表头和数据库表之间有映射））。

以下是获取给定单元格的sTitle（列名称值）的方法

（注意我的主键位于每一行的第一列，并确保即使使用带有ColReorder的可移动列iFixedColumns为1，也要将该键保存在第一列中。我的数据表由oTable引用。我假设我有单元格DOM引用，我在下面称之为“目标”：

var value = target.innerHTML;
var ret_arr = oTable.fnGetPosition( target );  // returns array of 3 indexes [ row, col_visible, col_all]
var row = ret_arr[0];
var col = ret_arr[1];
var data_row = oTable.fnGetData(row);
var primary_key = data_row[0];

var oSettings = oTable.fnSettings();  // you can find all sorts of goodies in the Settings
var col_id = oSettings.aoColumns[col].sTitle;  //for this code, we just want the sTitle

// you now have enough info to craft your SQL update query.  I'm outputting to alert box instead    
alert('update where id="'+primary_key+'" set column "'+col_id+'" ('+row+', '+col+') to "'+value+'"');

这是我必须弄明白的事情，因为我使用JEditable来允许用户编辑表格中的单元格。

Answer 3

上面的代码片段实际上帮助我解决了这个问题。这是我的代码：

// My DataTable
var oTable;

$(document).ready(function() {
    /*  You might need to set the sSwfPath! Something like:
    *   TableToolsInit.sSwfPath = "/media/swf/ZeroClipboard.swf";
    */
    TableToolsInit.sSwfPath = "../../Application/JqueryPlugIns/TableTools/swf/ZeroClipboard.swf";

    oTable = $('#tblFeatures').dataTable({
        // "sDom": '<"H"lfr>t<"F"ip>', // this is the standard setting for use with jQueryUi, no TableTool
        // "sDom": '<"H"lfrT>t<"F"ip>', // this adds TableTool in the center of the header
        "sDom": '<"H"lfr>t<"F"ip>T', // this adds TableTool after the footer
        // "sDom": '<"H"lfrT>t<"F"ip>T', // this adds TableTool in the center of the header and after the footer
        "oLanguage": { "sSearch": "Filter this data:" },
        "iDisplayLength": 25,
        "bJQueryUI": true,
        // "sPaginationType": "full_numbers",
        "aaSorting": [[0, "asc"]],
        "bProcessing": true,
        "bStateSave": true, // remembers table state via cookies
        "aoColumns": [
        /* CustomerId */{"bVisible": false },
        /* OrderId */{"bVisible": false },
        /* OrderDetailId */{"bVisible": false },
        /* StateId */{"bVisible": false },
        /* Product */null,
        /* Description */null,
        /* Rating */null,
        /* Price */null
        ]
    });

    // uncomment this if you want a fixed header
    // don't forget to reference the "FixedHeader.js" file.
    // new FixedHeader(oTable);
});

// Add a click handler to the rows - this could be used as a callback
// Most of this section of code is from the DataTables.net site
$('#tblFeatures tr').click(function() {
    if ($(this).hasClass('row_selected')) {
        $(this).removeClass('row_selected');
    }
    else {
        $(this).addClass('row_selected');

        // Call fnGetSelected function to get a list of selected rows
        // and pass that array into fnGetIdsOfSelectedRows function.
        fnGetIdsOfSelectedRows(fnGetSelected(oTable));
    }
});

function fnGetSelected(oTableLocal) {
    var aReturn = new Array();

    // fnGetNodes is a built in DataTable function
    // aTrs == array of table rows
    var aTrs = oTableLocal.fnGetNodes();

    // put all rows that have a class of 'row_selected' into
    // the returned array
    for (var i = 0; i < aTrs.length; i++) {
        if ($(aTrs[i]).hasClass('row_selected')) {
            aReturn.push(aTrs[i]);
        }
    }

    return aReturn;
}

// This code is purposefully verbose.
// This is the section of code that will get the values of
// hidden columns in a datatable
function fnGetIdsOfSelectedRows(oSelectedRows) {
    var aRowIndexes = new Array();
    var aRowData = new Array();
    var aReturn = new Array();
    var AllValues;

    aRowIndexes = oSelectedRows;    

    // The first 4 columns in my DataTable are id's and are hidden.
    // Column0 = CustomerId
    // Column1 = OrderId
    // Column2 = OrderDetailId
    // Column3 = StateId

    // Here I loop through the selected rows and create a
    // comma delimited array of id's that I will be sending
    // back to the server for processing.
    for(var i = 0; i < aRowIndexes.length; i++){
        // fnGetData is a built in function of the DataTable
        // I'm grabbing the data from rowindex "i"
        aRowData = oTable.fnGetData(aRowIndexes[i]);

        // I'm just concatenating the values and storing them
        // in an array for each selected row.
        AllValues = aRowData[0] + ',' + aRowData[1] + ',' + aRowData[2] + ',' + aRowData[3];
        alert(AllValues);
        aReturn.push(AllValues);
    }

    return aReturn;
}

Answer 4

这是一个如何在点击行

后获取ID的示例

$('#example tbody tr').live('click', function() {
         var row = example .fnGetData(this);
         id=row['id'];//or row[0] depend of situation
         function(id);
});

如果你需要表中的所有id，你必须使用这样的代码：

$(exampleTable.fnGetNodes()).each(function() { 

    var aPos = exampleTable.fnGetPosition(this);
    var aData = exampleTable.fnGetData(aPos[0]);
    aData[aPos[0]] = this.cells[0].innerHTML; 

    IdSet.push(aData[aPos[0]]);
});

希望有所帮助！

Answer 5

像这样的简单问题值得一个简单的jQuery解决方案。

假设您的ID在第0行并且您想在第5行执行操作时访问它，例如

$('td:eq(5)').click(function (){
    var id  = $(this).parent().find('td:eq(0)').html();
    alert('The id is ' + id);
});

注意这也适用于过滤器和分页结果。

我同意@fbas的回答并不是真的有用。

Answer 6

var oTable;

/* Get the rows which are currently selected */
function fnGetSelected(oTableLocal) {
    var aReturn = new Array();
    var aTrs = oTableLocal.fnGetNodes();

    for (var i = 0; i < aTrs.length; i++) {
        if ($(aTrs[i]).hasClass('row_selected')) {
            aReturn.push(aTrs[i]);
        }
    }
    // console.log( aReturn);
    return aReturn;
}

$(function() {

    /////////////////
    //btn_EditCustomer
    $('#btn_EditCustomer').on('click', function(e) {
        var anSelected = fnGetSelected(oTable);
        var rowData = oTable.fnGetData(anSelected[0]);
        console.log(rowData[0]);
    });
});  </script>

Answer 7

我的解决方案如下：将主键作为第一列 - 可以将其设置为“可见”或不是。我的编辑和删除链接位于行的最后一列和最后一列中 - 它们分别具有'edit'和'delete'的css类。然后使用rowCallBack，调用这样的函数：

<!-- datatables initialisation -->
"rowCallback": function( row, data ) {
    setCrudLinks(row, data);                  
}

function setCrudLinks(row, data) {
    d = $(row).find('a.delete');
    d.attr('href', d.attr('href')+'/'+data[0]);
    e = $(row).find('a.edit');
    e.attr('href', e.attr('href')+'/'+data[0]);
}

setCrudLinks（）只是将主键（data [0]）附加到链接href的末尾（无论可能需要什么）。这种情况发生在表格渲染之前，因此也适用于分页。

Answer 8

我有相同的用例，最后将我的代码转换为datatables.net插件。回购在这里：DataTables CellEdit Plugin

基本初始化快速简便：

table.MakeCellsEditable({
    "onUpdate": myCallbackFunction
});

myCallbackFunction = function (updatedCell, updatedRow) {
    var columnIndex = cell.index().column;
    var columnHeader = $(table.column(columnIndex).header()).html();
    console.log("The header  is: " + columnHeader);
    console.log("The new value for the cell is: " + updatedCell.data());
}

jQuery - datatables，如何获取列id

8 个答案: