public static function findAll()
 {
     $usersHaveModule = array();
     $data = BaseSingleton::select('SELECT USER_id_user, MODULE_id_module, date, mustPay, finalMark, has_failed, receipt ' . 'FROM user_has_module');
     foreach ($data as $row) {
         $userHasModule = new UserHasModule();
         $userHasModule->hydrate($row);
         $usersHaveModule[] = $userHasModule;
     }
     return $usersHaveModule;
 }