Downloading files on DataTables

cumhur

<script src="https://code.jquery.com/jquery-1.12.0.min.js"></script>
    <script src="https://cdn.datatables.net/1.10.11/js/jquery.dataTables.min.js"></script>

    <script src="https://code.jquery.com/jquery-1.12.0.min.js"></script>
    <script src="https://cdn.datatables.net/1.10.11/js/jquery.dataTables.min.js"></script>
    <script src="https://cdn.datatables.net/select/1.2.4/js/dataTables.select.min.js"></script>
    <script src="https://cdn.datatables.net/responsive/2.2.1/js/dataTables.responsive.min.js"></script>
     <script src="js/jquery.fileDownload.js"></script>


    <script src="https://cdn.datatables.net/buttons/1.5.1/js/dataTables.buttons.min.js"></script>
    <script src="https://cdn.datatables.net/buttons/1.5.1/js/buttons.flash.min.js"></script>
    <script>

 function render_urlfn(data,type,row,meta){        /* funtion Baslangic */
                            var parameters = meta.settings.oInit.columnDefs[meta.col].parameters;
                            var target_url = parameters.url;
                             return '<a href="'+target_url+data+'">'+data+'</a>';
                                        };/* funtion bitiş */


    $(document).ready(function() {
      var url = 'http://www.json-generator.com/api/json/get/cbEfqLwFaq?indent=2';






     var table  =    $('#arsivliste').DataTable( {
            "select" :false,
            "keys"  : true,
            "processing": false,
            "serverSide": true,



            "ajax": {        

                "url": "server-json-data.php",
                "type": "POST",
                "dataSrc": "records",

                      },
                         "columns": 
                             [
                                { "data": "id" },
                                { "data": "file_name"}, 
                                { "data": "uploaded"},
                                { "data": "path"   }, 
                                { "data": "$path" ,
                                    "defaultContent": "<a href=download.php?file = row[path]>Dowloand</a>"  },
                                {"data": null,
                                    "defaultContent":"<button> Delete </button>"},  

                             ],
                         "columnDefs":
                             [
                    {
                    "data" : "path",    
                    "defaultContent": "<a href=download.php?file=row[path]>Dowloand</a>", 
                    "defaultContent": "<button> Delete </button>",


                    "targets":'-1',
                       "render": function ( data, type, row, meta ) {
                         return '<a href=download.php?file = row["path"]>Download</a>';
                              }
                    },
                    {
                        "data" : "path",
                    "defaultContent":"<a href=download.php?file= row[path]>Dowloand</a>",
                    "defaultContent": "<button> Delete</button>",  

                    "targets":'-1',
                   "render": function ( data, type, row, meta ) {
  return '<a href=download.php?file = row[path]>Download</a>';
}

                     },
                             ],



        });
          table.column( 'path:data' ).data();
             table.column('-1').visible( false );

    });







    </script>

data tables file dowloand but
I have a sample datatables that I can not do file downloading on the datatables (download a file in the folder I specify / download / upload any file in *) The code I linked with mysql is as above