public static function editForm($uporabnik = [])
 {
     if (empty($uporabnik)) {
         $rules = ["id" => ['filter' => FILTER_VALIDATE_INT, 'options' => ['min_range' => 1]]];
         $data = filter_input_array(INPUT_GET, $rules);
         $uporabnik = UporabnikDB::get($data);
     }
     echo ViewHelper::render("view/admin/uporabnik-edit.php", ["uporabnik" => $uporabnik]);
 }