Set selected item by default

m75sa · October 2022

I have the following example that works perfectly for me.

Just a question:
Is it possible to move the selected option menu on the right of the label? So next to the header label for example (not alone in the cel...) possible?

kthorngren · October 2022

One option is to remove the .empty() when using appendTo() to append the select to the th.
https://jsfiddle.net/uoq39zmb/

Kevin

m75sa · October 2022

you are the best, as ever! Thanks

m75sa · November 2022

@kthorngren I'm using with ajax/server side processing... but seems to doesn't work... any idea?

kthorngren · November 2022

but seems to doesn't work... any idea?

What exactly doesn't work?

Kevin

m75sa · November 2022

i should replicate the issue.. .it's strange because if i don't use ajax and server side processing it works. will try to replicate so i hope you can help me
thanks in advance

m75sa · November 2022

hi, back again

this is the function that works when datas are not called via ajax (server side) but it doesn't when I use ajax...

$(function () {

var dataTable = $('#example-grid').DataTable( {
  "ajax":{
           url :"example-grid-data.php",
           type: "post", 
           error: function(){ 
             $(".example-grid-error").html("");
             $("#example-grid").append('<tbody class="example-grid-error"><tr><th colspan="3">Nessun dato presente.</th></tr></tbody>');
             $("#example-grid_processing").css("display","none");

           }
         },

initComplete: function() {

this.api().columns([7]).every(function() {

var column = this;
var c = column[0];
var select = $('<select style="display: block; " class="col'+c+'"><option value="">ALL</option></select>')
.appendTo($(column.header()))
  .on('change', function() {
    var val = $.fn.dataTable.util.escapeRegex(
      $(this).val()
    );
    column
      .search(val ? '^' + val + '$' : '', true, false)
      .draw();
  });

column.data().unique().sort().each(function(d, j) {
  var val = $('<div/>').html(d).text();
  select.append('<option value="' + val + '" selected>' + val + '</option>');

});


if (column[0] == 7) { 
  var valforcol = '';
  $(".col7").val(valforcol).change();
 column.search(valforcol ? '^' + valforcol + '$' : '', true, false).draw() 
}


});


this.api().columns([0]).every(function() {
var column = this;
$('input', this.header()).on('keyup change', function() {
  if (column.search() !== this.value) {
    column
      .search(this.value)
      .draw();
  }
});
});

},


stateSaveParams: function (settings, data) {
delete data.search;
},
order: [[2, 'asc']],
"language": {
  "lengthMenu": "_MENU_",
  "paginate": {
                 "previous": "<i class='fas fa-chevron-circle-left'></i>",
                 "next": "<i class='fas fa-chevron-circle-right'></i>"
              },

"info": "Voci in elenco: _TOTAL_ ",
"zeroRecords": "Nessuna voce presente",
"search": "Cerca",
"infoFiltered":   "",
"infoEmpty":      "",
"searchPlaceholder": "cerca...",


"search": "",
},
responsive: true,  
"autoWidth": true,
bInfo: false,
dom: '<"top"><"clear"><B><"right"lf>rt<"bottom"p><"clear">'
,

buttons: [

{ extend: 'print', text: '<i class="fas fa-solid fa-print"></i> STAMPA' },


],

"processing": true,
"serverSide": true,
"columnDefs": [ {
"targets": [0,7],
"orderable": false
} ],
"pageLength": 25,
"paging": true,
}).buttons().container().appendTo('#example_wrapper .col-md-6:eq(0)');


  });

m75sa · November 2022

$(function () {

var dataTable = $('#example-grid').DataTable( {
  "ajax":{
           url :"example-grid-data.php",
           type: "post", 
           error: function(){ 
             $(".example-grid-error").html("");
             $("#example-grid").append('<tbody class="example-grid-error"><tr><th colspan="3">Nessun dato presente.</th></tr></tbody>');
             $("#example-grid_processing").css("display","none");

           }
         },

initComplete: function() {

this.api().columns([7]).every(function() {

var column = this;
var c = column[0];
var select = $('<select style="display: block; " class="col'+c+'"><option value="">ALL</option></select>')
.appendTo($(column.header()))
  .on('change', function() {
    var val = $.fn.dataTable.util.escapeRegex(
      $(this).val()
    );
    column
      .search(val ? '^' + val + '$' : '', true, false)
      .draw();
  });

column.data().unique().sort().each(function(d, j) {
  var val = $('<div/>').html(d).text();
  select.append('<option value="' + val + '" selected>' + val + '</option>');

});


if (column[0] == 7) { 
  var valforcol = '';
  $(".col7").val(valforcol).change();
 column.search(valforcol ? '^' + valforcol + '$' : '', true, false).draw() 
}


});


this.api().columns([0]).every(function() {
var column = this;
$('input', this.header()).on('keyup change', function() {
  if (column.search() !== this.value) {
    column
      .search(this.value)
      .draw();
  }
});
});

},


stateSaveParams: function (settings, data) {
delete data.search;
},
order: [[2, 'asc']],
"language": {
  "lengthMenu": "_MENU_",
  "paginate": {
                 "previous": "<i class='fas fa-chevron-circle-left'></i>",
                 "next": "<i class='fas fa-chevron-circle-right'></i>"
              },

"info": "Voci in elenco: _TOTAL_ ",
"zeroRecords": "Nessuna voce presente",
"search": "Cerca",
"infoFiltered":   "",
"infoEmpty":      "",
"searchPlaceholder": "cerca...",


"search": "",
},
responsive: true,  
"autoWidth": true,
bInfo: false,
dom: '<"top"><"clear"><B><"right"lf>rt<"bottom"p><"clear">'
,

buttons: [

{ extend: 'print', text: '<i class="fas fa-solid fa-print"></i> STAMPA' },


],

"processing": true,
"serverSide": true,
"columnDefs": [ {
"targets": [0,7],
"orderable": false
} ],
"pageLength": 25,
"paging": true,
}).buttons().container().appendTo('#example_wrapper .col-md-6:eq(0)');


  });

I can see the select option menu but it doesn't filter...

kthorngren · November 2022

With server side processing the filtering is done at the server script. Are you using a Datatables supplied server side processing script?

Kevin

m75sa · November 2022

yes, mysql db

m75sa · November 2022

can you help me with a sample so i can adapt? Thanks a lot

kthorngren · November 2022

Which Datatables server side processing script are you using? It should support column searching.

Have you verified the Ajax request is sent to the server when using selecting a search option?

Have you verified the event hander fires when selecting a search option?

Can you post a link to your page or a test case replicating the issue so we can take a look?
https://datatables.net/manual/tech-notes/10#How-to-provide-a-test-case

Kevin

m75sa · November 2022

the problem is that the test case doesn't read remote ajax file...
can i send you the .php called from ajax ?

m75sa · November 2022

<?php
require_once '_inc/_db.php';
setlocale(LC_TIME, 'ita', 'it_IT.utf8');

$conn = mysqli_connect($servername, $username, $password, $dbname) or die("Connection failed: " . mysqli_connect_error());
$requestData= $_REQUEST;
$columns = array( 
    0 => 'item name', 
    1 => 'date_cnt', 
    2 => 'surname', 
    3 => 'iso', 
    4 => 'movement',
    5 => 'cnt',
    6 => 'location',
    7 => 'typetr',
    8 => 'fcd',
    9 => 'sts',
    10 => ''

);


$datagrid = "wm_fleet";
$tbl = "wbf";

$sql = "SELECT * FROM " .$tbl;  
$query=mysqli_query($conn, $sql) or die($datagrid."-im-grid-data.php: get ".$datagrid."-im1");
$totalData = mysqli_num_rows($query);
$totalFiltered = $totalData; 

$qr = $_REQUEST['search']['value'];
$qr = addslashes($qr);


if (!empty($requestData['search']['value'])) {

    $sql = "SELECT * FROM (SELECT t1.* FROM wbf t1 WHERE t1.id = (SELECT MAX(t2.id) FROM wbf t2 WHERE t2.nr_contenitore = t1.nr_contenitore)) as my_table_tmp WHERE 1=1 and nr_contenitore LIKE '%".$qr."%'  "; 

}
else {
    $sql="SELECT * FROM (SELECT t1.* FROM wbf t1 WHERE t1.id = (SELECT MAX(t2.id) FROM wbf t2 WHERE t2.nr_contenitore = t1.nr_contenitore) order by nr_contenitore asc) as my_table_tmp";

}




$query=mysqli_query($conn, $sql) or die($datagrid."-im-grid-data.php: get ".$datagrid."-im2");
$totalFiltered = mysqli_num_rows($query); 

$sql.=" ORDER BY ". $columns[$requestData['order'][0]['column']]."   ".$requestData['order'][0]['dir']."  LIMIT ".$requestData['start']." ,".$requestData['length']." ";
$query=mysqli_query($conn, $sql) or die($datagrid."-im-grid-data.php: get ".$datagrid."-im3");

$data = array();
function checkIsAValidDate($myDateString){
    return (bool)strtotime($myDateString);
}
while( $row=mysqli_fetch_array($query) ) { 
   $nr_contenitore = $row["nr_contenitore"];
   $nestedData=array(); 

  // DATA_CNT
  if ($row["date_cnt"]>0) {

    $crdatecnt=date_create(date($row["date_cnt"]));
    $crdatecnt=date_format($crdatecnt,"d/m/Y H:i");
    $data_cnt = $crdatecnt;
} else {
    $data_cnt = '';
}; 
        0 => 'item name', 
    1 => 'date_cnt', 
    2 => 'surname', 
    3 => 'iso', 
    4 => 'movement',
    5 => 'cnt',
    6 => 'location',
    7 => 'typetr',
    8 => 'fcd',
    9 => 'sts',
    10 => ''


$cntm =strtoupper($row["nrcont"]);
$iso =strtoupper($row["iso"]);
$fcd =strtoupper($row["fcd"]);
$movement = strtoupper($rsf["movement"]);
 };



$nestedData[] = $cntm;
$nestedData[] = $iso;
$nestedData[] = $fcd;
$nestedData[] = $movement;
$nestedData[] = $fcd;   
$nestedData[] = $fcd;
$nestedData[] = $fcd;
$nestedData[] = $fcd;
$nestedData[] = $fcd;
$nestedData[] = $fcd;
$data[] = $nestedData;

}

$json_data = array(
            "draw"            => intval( $requestData['draw'] ),  
            "recordsTotal"    => intval( $totalData ), 
            "recordsFiltered" => intval( $totalFiltered ), 
            "data"            => $data 
            );



echo json_encode($json_data, JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_HEX_AMP | JSON_UNESCAPED_UNICODE);

?>

kthorngren · November 2022

Please provide details of what is not working and the troubleshooting you have done. Just posting code and saying it doesn't work does not provide enough details for us to help.

Kevin

m75sa · November 2022

agree, the problem is that it doesn't filter... so i can see the select option menu but when i change the item it loads for a second and the nothing changes...
I would like to replicate the issue with the testing code but the ajax call doesn't work on the testing area...

kthorngren · November 2022

I don't use PHP and not familiar with it so I might be missing something but it doesn't look like your script is processing and using the column search values sent to the server. See the SSP Protocol docs for details.

Take a look at the ssp.class.php script used in the SSP examples. Maybe look at using the Editor libraries as described in this blog.

Kevin

m75sa · November 2022

I see this example:
https://datatables.net/examples/server_side/simple.html

now if i want to replicate it on jsbin or similar test case platform it doesn't work.

But maybe i found a way. Starting from this sample, if i need to filter the first column with a select option ?
In this way i can have a server side processing datas and the filtered function i need...
can you help me on this?

m75sa · November 2022

or in addition i found this that uses ajax call:
http://live.datatables.net/gihuqawi/5/edit

now if i want to add a select option on the first or second column?

kthorngren · November 2022

now if i want to replicate it on jsbin or similar test case platform it doesn't work.

You can get SSP templates here.

Kevin

m75sa · November 2022

i cannot find a way how to solve...
can you help me to add a filter here?
http://live.datatables.net/gihuqawi/5/edit
sorry and thanks

Set selected item by default

Set selected item by default

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Set selected item by default

Set selected item by default

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