Datatables modif kolom

<table class="table table-bordered table-striped" id="mytable">
                <thead>
                    <tr>
                        <th width="80px">No</th>
                        <th>Judul</th>
                        <th>Link</th>
                        <th>Icon</th>
                        <th>IsParent</th>
                        <th>Status Aktif</th>
                        <th width="100px">Action</th>
                    </tr>
                </thead>

            </table>


        <script src="<?php echo base_url('assets/js/jquery-1.11.2.min.js') ?>"></script>
        <script src="<?php echo base_url('assets/datatables/jquery.dataTables.js') ?>"></script>
        <script src="<?php echo base_url('assets/datatables/dataTables.bootstrap.js') ?>"></script>
        <script type="text/javascript">
            $(document).ready(function() {
                $.fn.dataTableExt.oApi.fnPagingInfo = function(oSettings)
                {
                    return {
                        "iStart": oSettings._iDisplayStart,
                        "iEnd": oSettings.fnDisplayEnd(),
                        "iLength": oSettings._iDisplayLength,
                        "iTotal": oSettings.fnRecordsTotal(),
                        "iFilteredTotal": oSettings.fnRecordsDisplay(),
                        "iPage": Math.ceil(oSettings._iDisplayStart / oSettings._iDisplayLength),
                        "iTotalPages": Math.ceil(oSettings.fnRecordsDisplay() / oSettings._iDisplayLength)
                    };
                };

                var t = $("#mytable").dataTable({
                    initComplete: function() {
                        var api = this.api();
                        $('#mytable_filter input')
                                .off('.DT')
                                .on('keyup.DT', function(e) {
                                    if (e.keyCode == 13) {
                                        api.search(this.value).draw();
                            }
                        });
                    },
                    oLanguage: {
                        sProcessing: "loading..."
                    },
                    processing: true,
                    serverSide: true,
                    ajax: {"url": "menu_super_admin/json", "type": "POST"},
                    columns: [
                        {
                            "data": "id",
                            "orderable": false
                        },{"data": "judul"},{"data": "link"},{"data": "icon"},{"data": "IsParent"},
                        {"data": "status_aktif"},
                        {
                            "data" : "action",
                            "orderable": false,
                            "className" : "text-center"
                        }
                    ],
                    order: [[0, 'desc']],
                    rowCallback: function(row, data, iDisplayIndex) {
                        var info = this.fnPagingInfo();
                        var page = info.iPage;
                        var length = info.iLength;
                        var index = page * length + (iDisplayIndex + 1);
                        $('td:eq(0)', row).html(index);
                        var status = "";
                        if(data.status_aktif == "Y"){
                            status = "aktif";
                        }else{
                            status = "nonaktif";
                        }
                        $('td:eq(5)', row).html(status);
                    }
                });
            });
        </script>