The PHP code is:

---

$db->exec_query("select * from gnm_unit");

$select = "<select>";
while( $row = $db->fetch_data() )
{
    $selected = ( $row["id"] == "KGS" ) ? "selected" : "";
    $select .= "<option value="". $row["id"] ."" {$selected}>". $row["name"] ."</option>";
}
$select .= "</select>";

//send response to ajax
header("Content-Type: text/html");
echo $select;

and it sends to the client:

---

<select><option value="KGS" selected>KGS</option><option value="LTS" >LTS</option><option value="UNO" >UNO</option></select>

Every is fine, well, I suppose, I have other selects declared into the Search Form except that these don't get data from server, they take them from ColModel as follow:

{name:"enabled", index:"enabled", width:100, align:"center", editable:true, search:true, formatter:"checkbox", edittype:"checkbox", stype:"select", editoptions:{value:"1:0",defaultValue:"1"}, searchoptions:{value:{0:$.security.grid.personal.disabled,1:$.security.grid.personal.enabled}, sopt:['eq']}}

//text vars

$.security.grid.personal.disabled = "Disabled";

$.security.grid.personal.enabled = "Enabled";

These last "selects" work fine, they dont send 'null' when the "select" is built.

best regards

The simple check is - please see what is your code when you buil the select. See what data is sended from  server when the select is build

Regardas

I've a gird with a search form enabled, one of the search conditions is a select that is filled from the server, the problem is that the first time that this select is filled and I send the query to the server, on the other side I get 'null' instead of the select's value, but, if I change to another value, and also, if I return to the first one all works fine.

what do I doing wrong?,

regards