Question

我有一个DataTable，它有多行表头和colspan。类似的东西：

<thead>
  <tr>
    <th>Level 1</th>
    <th colspan='2'>Level 1 - Item 1</th>
    <th colspan='2'>Level 1 - Item 2</th>
  </tr>
  <tr>
    <th>Level 2</th>
    <th>Level 2 - Item 1a</th>
    <th>Level 2 - Item 1b</th>
    <th>Level 2 - Item 2a</th>
    <th>Level 2 - Item 2b</th>
  </tr>
</thead>

然而，当我使用TableTools插件导出时，除了“打印”选项之外，其余所有（Excel，CSV，Pdf等）只有“Level 2”标题行而不是Level 1。

有关如何将其导出的任何建议也是1级？

Answer 1

如果您想将level1也导出为excel，还有另一种方法：

将rowspan / colspan替换为空单元格，如：

   <thead>
      <tr>
        <th>Level 1</th>
        <th>Level 1 - Item 1</th>
        <th></th>
        <th>Level 1 - Item 2</th>
        <th></th>
      </tr>
      <tr>
        <th>Level 2</th>
        <th>Level 2 - Item 1a</th>
        <th>Level 2 - Item 1b</th>
        <th>Level 2 - Item 2a</th>
        <th>Level 2 - Item 2b</th>
      </tr>
    </thead>

然后按上面@misiu的建议编辑TableTools.js 查找_fnGetDataTablesData并在其中更改此内容：

if (oConfig.bHeader) { ... }

将其作为：

if (oConfig.bHeader) {
    //another loop
    for (i = 0, rowCount = dt.nTHead.rows.length; i < rowCount; i++) {
        aRow = []; //clear row data
        for (j = 0, iLen = dt.aoColumns.length; j < iLen; j++) {
            if (aColumnsInc[j] && dt.nTHead.rows[i].children[j] !== null) {
                sLoopData = dt.nTHead.rows[i].children[j].innerHTML.replace(/\n/g, " ")
                    .replace(/<.*?>/g, "")
                    .replace(/^\s+|\s+$/g, "");
                sLoopData = this._fnHtmlDecode(sLoopData);
                aRow.push(this._fnBoundData(sLoopData, oConfig.sFieldBoundary, regex));
            } else {
                aRow.push(this._fnBoundData("", oConfig.sFieldBoundary, regex)); //I'm not shure of this!!
            }
        }
        aData.push(aRow.join(oConfig.sFieldSeperator));
    }
}

这会将复杂的标头复制/导出到csv / excel。虽然空表格单元格在excel中保持为空，但不会合并。您可以手动合并它们。

虽然不是一个理想的解决方案，但现在这对我来说非常合适。

Answer 2

编辑TableTools.js。
查找_fnGetDataTablesData并在其中更改此内容：

if (oConfig.bHeader) {
    aRow = [];

    for (i = 0, iLen = dt.aoColumns.length; i < iLen; i++) {
        if (aColumnsInc[i]) {
            sLoopData = dt.aoColumns[i].sTitle.replace(/\n/g, " ")
                .replace(/<.*?>/g, "")
                .replace(/^\s+|\s+$/g, "");
            sLoopData = this._fnHtmlDecode(sLoopData);

            aRow.push(this._fnBoundData(sLoopData, oConfig.sFieldBoundary, regex));
        }
    }

    aData.push(aRow.join(oConfig.sFieldSeperator));
}

到此：

if (oConfig.bHeader) {

    //another loop
    for (i = 0, rowCount = dt.nTHead.rows.length; i < rowCount; i++) {
        aRow = []; //clear row data
        for (j = 0, iLen = dt.aoColumns.length; j < iLen; j++) {
            if (aColumnsInc[j] && dt.nTHead.rows[i].children[j] !== null) {
                sLoopData = dt.nTHead.rows[i].children[j].innerHTML.replace(/\n/g, " ")
                    .replace(/<.*?>/g, "")
                    .replace(/^\s+|\s+$/g, "");
                sLoopData = this._fnHtmlDecode(sLoopData);
                aRow.push(this._fnBoundData(sLoopData, oConfig.sFieldBoundary, regex));
            } else {
                aRow.push(this._fnBoundData("", oConfig.sFieldBoundary, regex)); //I'm not shure of this!!
            }
        }
        aData.push(aRow.join(oConfig.sFieldSeperator));
    }
}

我现在无法测试这个roght，所以试一试当我从艾伦那里得到更好的解决方案时，我会更新我的答案。

Answer 3

if ( oConfig.bHeader )
    {
        //-1 because we don't want the last row header
        for (i=0; i<dt.nTHead.rows.length-1; i++)
        {
            //wrap jquery object
            $(dt.nTHead.rows[i]).find('th').each(function(){
           var th = $(this);
           sData += th.text().replace(/\n/g," ").replace( /<.*?>/g, "" ).replace(/^\s+|\s+$/g,"");

           var colspan = th.attr('colspan');
           if (!colspan) colspan = 1; //default colspan is 1

           //only the first colspan have the label, other colspans are empty text, we can't implement cell mergin in csv file
           for (j=0; j<colspan; j++)
           {
                 sData += oConfig.sFieldSeperator;
           }
        });

        sData += sNewline;
        }

        for ( i=0, iLen=dt.aoColumns.length ; i<iLen ; i++ )
        {
            if ( aColumnsInc[i] )
            {
                sLoopData = dt.aoColumns[i].sTitle.replace(/\n/g," ").replace( /<.*?>/g, "" ).replace(/^\s+|\s+$/g,"");
                sLoopData = this._fnHtmlDecode( sLoopData );

                sData += this._fnBoundData( sLoopData, oConfig.sFieldBoundary, regex ) +
                    oConfig.sFieldSeperator;
            }
        }
        sData = sData.slice( 0, oConfig.sFieldSeperator.length*-1 );
        sData += sNewline;
    }

Answer 4

看一下这个答案https://datatables.net/forums/discussion/22592/export-multiple-row-headers 使用这段代码，您将能够从标题导出所有单元格，并且colspan和rowspans将在空单元格中转换：）

TableTools仅导出单个标题行

4 个答案: