public function getIdSousQuartier($idRue = null)
    {
        $idSousQuartier = null;
        if (!isset($idRue) && $idRue != '') {
            echo "Error while getting sub neighborhood id, no street informations were specified for this request.";
        } else {
            $req = "SELECT idSousQuartier
    			FROM rue
    			WHERE idRue = ".$idRue
            ;
            $res = $this->connexionBdd->requete($req);
            $fetchSousQuartier = mysql_fetch_assoc($res);
            $idSousQuartier = $fetchSousQuartier['idSousQuartier'];
        }
        return $idSousQuartier;
    }