phpgrid - Dropdown

$g = new jqgrid();
    $grid["caption"] = "Circumscripții";
    $grid["autowidth"] = true; // expand grid to screen width
    $grid["multiselect"] = false;
    $grid["height"] = "auto";

    $grid["detail_grid_id"] = "circumscriptii_arondate";
    $grid["subgridparams"] = "id,cod";

    $g->set_options($grid);

    $e["on_insert"] = array("circumscriptie_adauga", null, false);
    $e["on_update"] = array("circumscriptie_editeaza", null, false);
    $g->set_events($e);

    $g->table = "circumscriptii";

    $g->set_actions(array(
        "add"=>true,
        "edit"=>true,
        "delete"=>false,
        "clone"=>false,
        "rowactions"=>false,
        "search" => "advance",
        "showhidecolumns" => false
        )
    );

$out = $g->render("circumscriptii");
// [-] MASTER GRID

// [+] DETAIL GRID
$g2 = new jqgrid();

    $grid=array(); //clear $grid
    $grid["caption"] = "Arondare circumscripție";
    $grid["height"] = "";
    $grid["autowidth"] = true;

    $grid["add_options"]["beforeInitData"] = "function(formid){ var selr = jQuery('#circumscriptii').jqGrid('getGridParam','selrow'); if (!selr) { alert('Selectează întâi o circumscripție!'); return false; } }";
    $g2->set_options($grid);

    $_id = intval($_GET["rowid"]);
    $cod = $_GET["cod"];
    $cid = intval($_GET["id"]);
    /// SELECTION OF DETAIL GRIB BASED ON MASTER GRID
    $g2->select_command = "SELECT circumscriptii_arondate.id as id, circumscriptie, cod AS circumscriptie_cod, medic, utilizatori_info.nume as nume, utilizatori_info.prenume as prenume, data_arondare
            FROM circumscriptii_arondate, circumscriptii, utilizatori_info
            WHERE circumscriptii_arondate.circumscriptie = circumscriptii.id
                AND circumscriptii_arondate.medic = utilizatori_info.utilizator
                AND circumscriptie={$cid}
            GROUP BY circumscriptii_arondate.id";
    $g2->table = "circumscriptii_arondate";

    $cols = array(); //clear $cols
    $col = array(); //clear $col
    $col["title"] = "Id";
    $col["name"] = "id";
    $col["editable"] = true;
    $col["editoptions"] = array(
            "readonly" => "readonly");
    $col["search"] = false;
    $cols[] = $col;

    $col = array();
    $col["title"] = "Circumscriptie";
    $col["name"] = "circumscriptie";
    $col["editable"] = false;
    $col["editoptions"] = array(
            "readonly" => "readonly");
    $col["default"] = $cod;
    $col["search"] = false;
    $cols[] = $col;

    $col = array();
    $col["title"] = "Cod circumscripție";
    $col["name"] = "circumscriptie_cod";
    $col["editable"] = false;
    $col["hidden"] = true;
    $col["search"] = false;
    $cols[] = $col;

    $col = array(); // HIDE FROM LIST BUT SHOW ON EDIT
    $col["title"] = "Medic";
    $col["name"] = "medic";
    $col["hidden"] = true;
    $col["editable"] = true;
    $col["edittype"] = "select";
    // PROBLEMS IN DROPDOWN
    $str = $g2->get_dropdown_values("SELECT utilizator as k, CONCAT(nume,' ', prenume) as v FROM utilizatori_info
                    WHERE utilizator NOT IN (SELECT id FROM utilizatori WHERE stare<>1)
                        AND utilizator NOT IN (SELECT medic FROM circumscriptii_arondate WHERE circumscriptie=".$cid.")");
    $col["editoptions"] = array("value"=>$str);
    $col["editrules"] = array("edithidden"=>true);
    $cols[] = $col;

    $col = array();
    $col["title"] = "Medic arondat";
    $col["name"] = "nume";
    $col["editable"] = false;
    $col["default"] = "<a href=\"#link_catre_medic\">{nume} {prenume}</a>";
    $cols[] = $col;

    $col = array(); //this with the above "nume" will be solve with SQL CONCAT
    $col["name"] = "prenume";
    $col["editable"] = false;
    $col["hidden"] = true;
    $cols[] = $col;

    $col = array();
    $col["title"] = "Data arondare";
    $col["name"] = "data_arondare";
    $col["align"] = "center";
    $col["formatter"] = "date";
    $col["formatoptions"] = array("srcformat"=>'Y-m-d',"newformat"=>'d.m.Y');
    $col["editable"] = false;
    $col["search"] = false;
    $cols[] = $col;

    $g2->set_columns($cols);

    $e["on_insert"] = array("add_client", null, true);
    $e["on_update"] = array("edit_client", null, false);
    $g2->set_events($e);

    $g2->set_actions(array(
            "add"=>true,
            "edit"=>true,
            "delete"=>false,
            "rowactions"=>false,
            "autofilter" => true,
            "search" => "advance"
        )
    );
$out2 = $g2->render("circumscriptii_arondate");