Ytukyg

I have a problem in getting the value in my field, I am using DataTable for my table.

My error is , the selected value is not posting in table.

here's my code...
NOTE: I'm using Phalocon PHP , DataTable API for phalcon.

here's my controller :

public function orderWalkinAction() 

{

    $this->view->disable();

    if($this->request->isPost()) {

        $arr = array();

        $dropdown_id = $this->request->getPost('dropdown_id', 'striptags');

        $select_orderitems_query = Medics::find(

            [

                "conditions" => "medID = :id: AND status = 'ACTIVE'",

                "bind" => 

                [ 

                    "id" => $dropdown_id,

                ]

            ]

        );

            foreach ($select_orderitems_query as $data_orderItem) {

                $orderitem_medID        = $data_orderItem->medID;

                $orderitem_code         = $data_orderItem->itemcode;

                $orderitem_name         = $data_orderItem->itemname;

                $orderitem_brand        = $data_orderItem->itembrand;

                $orderitem_quan         = $data_orderItem->itemquan;

                $orderitem_price        = $data_orderItem->itemprice;

                $orderitem_totalprice   = $data_orderItem->totalPrice; 



                $arr = array(

                    "itemcode"  => $orderitem_code,

                    "itemname"  => $orderitem_name."-".$orderitem_brand,

                    "itemquan"  => $orderitem_quan,

                    "itemprice" => $orderitem_price,

                    "total"     => $orderitem_totalprice,

                    "action"    => "<button class='btn btn-danger' id='orderRecord-delete' data-id='".$orderitem_medID."'><i class='fa fa-trash'></i></button>"

                ); 

            }



        $dataTables = new DataTable();

        $dataTables->fromArray($arr)->sendResponse();

    }





}

Here's my Js

$(document).on('change', '#items', function(e) {

    e.preventDefault();

    var dropdown_val = $(this).val();

    if(dropdown_val != null) 

    {

        //Table For Order Items

        $('#order_tbl').DataTable({

            processing: true,

            deferRender: true,

            ajax: {

                        url: '/HPsys/walkin/orderWalkin',

                        method: 'POST',

                        data: { dropdown_id : dropdown_val }

                    },

            columns: [

                { data : "itemcode" },

                { data : "itemname" },

                { data : "itemquan" },

                { data : "itemprice" },

                { data : "total" },

                { data : "action" },

            ]

        });

    } 

    else 

    {



    }

});

Here's my View

<select class="form-control" id="items">

                <option value="">-- Select Item --</option>

            </select>

            <hr>

            <h2 class="text-center">Order Details </h2>

            <table class="table" id="order_tbl">

                <thead>

                    <tr>

                        <th>Item Code</th>

                        <th>Item Name</th>

                        <th>Quantity</th>

                        <th>Price</th>

                        <th>Total</th>

                        <th>Action</th>

                    </tr>

                </thead>



            </table>

If there's a vlog/tutorial/ or any recommendation please feel free to comment, I really appreciate that.