/** * Get the associated Nivells object * * @param PropelPDO Optional Connection object. * @return Nivells The associated Nivells object. * @throws PropelException */ public function getNivells(PropelPDO $con = null) { if ($this->aNivells === null && $this->nivell_id !== null) { $this->aNivells = NivellsPeer::retrieveByPk($this->nivell_id); /* The following can be used additionally to guarantee the related object contains a reference to this object. This level of coupling may, however, be undesirable since it could result in an only partially populated collection in the referenced object. $this->aNivells->addUsuarisSitess($this); */ } return $this->aNivells; }