Search Ajax CI

/* Javascript */

$(document).on('click', '#Tombol', function(e){
    var awal    = $('#Txt_TanggalAwal').val();
    var akhir   = $('#Txt_TanggalAkhir').val();

    if (session.user_group == '4') {
        var url = site + "riwayat/cari_komisi_kasir";
    }else if (session.user_group == '6') {
        var url = site + "riwayat/cari_komisi_terapi";
    }

    $.ajax({
        url         : url,
        dataType    : "JSON",
        type        : "POST",
        data        : {'tgl_awal':awal,'tgl_akhir':akhir},
        success     : function(data){
            $('#tampilkan').html(data);
        }
    });
});


/* Controller */

public function cari_komisi_kasir(){
    $id = $this->session->userdata('user_id');
    $store = $this->session->userdata('store_id');

    $tgl_awal = $this->riwayat->SystemTgl($this->input->post('tgl_awal'));
    $tgl_akhir = $this->riwayat->SystemTgl($this->input->post('tgl_akhir'));

    $data_search = $this->riwayat->komisi_kasir($id, $tgl_awal, $tgl_akhir, $store);

    echo json_encode($data_search);
}


/* View */

<form id="form-cari" method="post" action="<?php echo base_url();?>riwayat/cari">
            <div class="row">
                <div class="col-md-12">
                    <div class="card card-box">
                        <div class="row">
                            <div class="col-sm-10">
                                <div class="form-group">
                                    <div class="input-daterange input-group" id="date-range">
                                    <?php echo form_input('Txt_TanggalAwal', '', ['type' => 'date', 'id' => 'Txt_TanggalAwal', 'class' => 'form-control', 'placeholder' => date('d/m/Y', mktime(0,0,0, date("m"), date("d")-7, date("Y")))]);?>
                                        <span class="input-group-addon b-0">s/d</span>
                                    <?php echo form_input('Txt_TanggalAkhir', '', ['type' => 'date', 'id' => 'Txt_TanggalAkhir', 'class' => 'form-control', 'placeholder' => date('d/m/Y')]);?>
                                    </div>
                                </div>
                            </div>
                            <div class="col-sm-2">
                                <div class="form-group">
                                    <?php echo form_button(['type' => 'button', 'class' => 'btn btn-primary btn-md pull-right', 'id' => 'Tombol', 'content' => '<i class="fa fa-search"></i> Cari']);?>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </form>

<div id="tampilkan"></div>