how to implement datatables index column ?

[buncis]

I'm tring to implement index column, If we see the example https://datatables.net/examples/api/counter_columns.html we just need to throw empty and add this line

$(document).ready(function() {
    var t = $('#example').DataTable( {
        "columnDefs": [ {
            "searchable": false,
            "orderable": false,
            "targets": 0
        } ],
        "order": [[ 1, 'asc' ]]
    } );

    t.on( 'order.dt search.dt', function () {
        t.column(0, {search:'applied', order:'applied'}).nodes().each( function (cell, i) {
            cell.innerHTML = i+1;
        } );
    } ).draw();
} );

so I'm trying to throw null data from the server but it fails, since the counter is only count the data that send to html(only 10/based on show entries)

then I conclude the best way is to send the index column from the server itself instead calculate it in front end

@n-rodriguez any idea how to implement this?, I think its more easy to implements now, since we no longer depends on pagination gem

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