Multiple header rows export not a feature?

jpcolumbii

So I've set up a report in the old DataTables/Tabletools. I wanted to update to the newest Datatables but now the header gets simplified.

<table id='tc' name='tc'>
        <thead>
        <tr>
        <th colspan=16>Title</th>
        </tr><tr>
        <th rowspan=2>Course Name</th>
        <th rowspan=2>Start Date</th>
        <th rowspan=2>Total Cost</th>
        <th rowspan=2>Cost Per Student</th>
        <th colspan=2>Group</th>
        <th colspan=2>Group</th>
        <th colspan=2>Group</th>
        <th colspan=2>Group</th>
        <th colspan=2>Group</th>
        <th colspan=2>Group</th>
        </tr><tr>
        <th>Qty</th>
        <th>Cost</th>
        <th>Qty</th>
        <th>Cost</th>
        <th>Qty</th>
        <th>Cost</th>
        <th>Qty</th>
        <th>Cost</th>
        <th>Qty</th>
        <th>Cost</th>
        <th>Qty</th>
        <th>Cost</th>
        </tr>
        </thead>
        <tbody>
        ... Body Content ...
        </tbody>
</table>

However, only one header row is exported as follows:

<tr>
    <th>Course Name</th>
    <th>Start Date</th>
    <th>Total Cost</th>
    <th>Cost Per Student</th>
    <th>Qty</th>
    <th>Cost</th>
    <th>Qty</th>
    <th>Cost</th>
    <th>Qty</th>
    <th>Cost</th>
    <th>Qty</th>
    <th>Cost</th>
    <th>Qty</th>
    <th>Cost</th>
    <th>Qty</th>
    <th>Cost</th>
</tr>

I saw a post that Multiple headers are not supported. Given that, how would I go about editing it myself to change how it simplifies the multiple headers into one? As the download page suggests I added the external link to the code, but if it's not supported I think I may just download it and include/modify it locally.

jpcolumbii

I should probably also mention that I am only recently moving from the old version of Datatables/Tabletools to the new version in order to resolve a different issue I had with the export.

allan

There is currently no option to export multiple header or footer rows in either TableTools or Buttons.

Allan

jpcolumbii

I suppose I should have expected that response. Could you point me to where the header is handled for PDFs and CSVs so that I can tinker with it?

allan

This function is where the data to be exported is gathered and would be the starting point.

Allan