javascript - Child row datatables - row data value undefined -

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i have datatable child rows populated following function:

$('#mydatatable tbody').on('click', 'td.details-control', function () {             console.log(table.row(this).data());             var tr = $(this).closest('tr');             var row = table.row(tr);              if (row.child.isshown())             {                 // row open - close                 row.child.hide();                 tr.removeclass('shown');             }             else {                 // open row                 row.child(format(row.data())).show();                 tr.addclass('shown');             }         });

the format function:

function format(d) {             // `d` original data object row             return '<table cellpadding="5" cellspacing="0" border="0" style="padding-left:50px;">' +                 '<tr>'+                 '<td><strong>blabla1</td>' +                 '<td align="center">'+                     d.blabla1 +                 '</td>'+                  '<td><strong>blabla2</td>' +                 '<td align="center">'+                     d.blabla2+                 '</td>'+             '</tr>' +             '</table>';         }

however, when display page, , expand child rows, values of columns "undefined"...

the rows in datatable populated model (using mvc 4) follows:

<tbody>         @foreach (var item in model)         {              <tr>                  <td align="center">                     @html.displayfor(modelitem => item.blabla3)                 </td>     .....</tr>}     </tbody>

i think missing method row.data() loaded formatting function.... correct way of doing so? checked documentations , use tried....

apparently had select index of object/array returned .data() every row, following code worked me.....(replace known_index integer index of child row...)

<tr>'+                 '<td><strong>blabla1</td>' +                 '<td align="center">'+                     d[known_index]+                 '</td>'+ . . . '</tr>'+

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