public function setActiveUser($oUser)
    {
        $this->activeUser = $oUser;
        $oDateTimeService = Factory::service('DateTime');

        //  Set the user's date/time formats
        $sFormatDate = $this->activeUser('pref_date_format');
        $sFormatDate = $sFormatDate ? $sFormatDate : $oDateTimeService->getDateFormatDefaultSlug();

        $sFormatTime = $this->activeUser('pref_time_format');
        $sFormatTime = $sFormatTime ? $sFormatTime : $oDateTimeService->getTimeFormatDefaultSlug();

        $oDateTimeService->setFormats($sFormatDate, $sFormatTime);
    }