public static function edit()
 {
     $rules = self::getRules();
     $rules["id"] = ['filter' => FILTER_VALIDATE_INT, 'options' => ['min_range' => 1]];
     $data = filter_input_array(INPUT_POST, $rules);
     if (self::checkValues($data)) {
         UporabnikDB::update($data);
         ViewHelper::redirect(BASE_URL . "uporabnik?id=" . $data["id"]);
     } else {
         self::editForm($data);
     }
 }