static function getAvailableCountries()
 {
     $model = new connectionUserModel();
     $countryID = $model->getObject()->distinct('country', array('sex' => $model->getOppositeSex()));
     $data = array();
     foreach ($countryID as $id) {
         $data[] = (int) $id;
     }
     $modelCountry = new connectionCountryModel();
     return $modelCountry->getList(Language::getActiveLanguageISO(), array('country_id' => array('$in' => $data)));
 }