DataTable always return error Requested unknown parameter even if json is correct

hakimapg

Help, for some reason I Always got error "DataTables warning: table id=example - Requested unknown parameter 'NamaKategori' for row 0, column 0. For more information about this error, please see http://datatables.net/tn/4"

but column 'NamaKategori' IS returned just fine in console log, I don't understand where is my problem here.

here is the console log of my AJAX

here is my Javascript Code:

$('#example').DataTable( {
                processing: true,
                serverSide: true,
                ajax: {
                    url: 'lib/kategori_list.php',
                    type: 'POST'
                }, 
                "columns": [ 
                    { "data": "NamaKategori" } 
                ],
                dom: 'Brt',
                buttons: [
                    'copy', 'csv', 'excel', 'pdf', 'print'
                ]
            } );

and here is my "kategori_list.php"

include_once('../koneksi/koneksi.php');

include_once('akses_get.php'); 

// Table name and primary key
$table = 'kategori';
$primaryKey = 'IDKategori';

// Columns to include in the result set
$columns = array(
    array( 'db' => 'NamaKategori', 'dt' => 0 ) 
);

// Build the SQL query
$sql = "SELECT NamaKategori FROM $table";


// Apply filtering, if any
if (!empty($_POST['search']['value'])) {
    $search = $_POST['search']['value'];
    $sql .= " WHERE NamaKategori LIKE '%$search%' OR Catatan LIKE '%$search%'";
}

// Apply sorting, if any
if (!empty($_POST['order'])) {
    $orderBy = $_POST['columns'][$_POST['order'][0]['column']]['data'];
    $orderDir = $_POST['order'][0]['dir'];
    $sql .= " ORDER BY $orderBy $orderDir";
}

// Apply paging, if any
if ($_POST['start'] != 0 || $_POST['length'] != -1) {
    $start = $_POST['start'];
    $length = $_POST['length'];

    $sql .= " LIMIT $start, $length";
}

 
// Execute the query
$result = $connection->query($sql);

// Build the response object
$response = array(
    "draw" => intval($_POST['draw']),
    "recordsTotal" => $result->num_rows,
    "recordsFiltered" => $result->num_rows,
    "data" => array()
);

// Add each row of data to the response
while ($row = $result->fetch_assoc()) {
    $response['data'][] = array_values($row);
}

// Close the database connection
$connection->close();

// Return the response as JSON
echo json_encode($response);

please Help, I don't understand anymore how do I improve this

allan

If you could like to a test case showing the issue, that would be really helpful. If not, can you use the debugger to give me a trace please - click the Upload button and then let me know what the debug code is.

Allan

hakimapg

@allan, hello. thanks for the reply

I don't quite understand what this debugger about, But I have put the code in my web and click upload button.

allan

You need to give me the code that the debugger generates after the upload is complete. That way I can access the trace.

Allan

hakimapg

@allan, sorry for the trouble.

I just create a new project and do a basic select until it working... then add the parameter one by one to exactly like my code above and it just works...

I don't understand why but I take that,

anyway, sorry for the hassle, thanks

allan

Yup - if it works, that's awesome! Glad to hear you've got it working!

Allan