how to save hasOne relation ?

AdminModel hasOne profile

    $this->hasOne('profileId', 'Cntysoft\Framework\UserCenter\Admin\Model\Profile', 'id',array(
           'alias' => 'profile',
            'foreignKey' => array(
                'action' => Relation::ACTION_CASCADE
            )
        ));

profile

     public function initialize()
    {
        $this->belongsTo('id', 'Cntysoft\Framework\UserCenter\Admin\Model\Admin', 'profileId', array('alias' => 'admin','foreignKey' => array(
                'action' => Relation::ACTION_CASCADE
            ))
        );
    }

i try like this

    $profile->assignBySetter(array(
           'recentApps'  => array(),
           'wallPaper'   => Constant::P_DEFAULT_WALLPAPER,
           'vdesktopNum' => Constant::P_DEFAULT_VD_NUM,
           'appVdMap'    => array(),
           'appVdOrder'  => array()
                ), true);
    $adminModel->profile = $profile;
    $adminModel->create();

Profile and admin data both are saved to database; but admin's profileId column is null , expect the new inserted profileid

My way I like this, it works , but is not beauty, Anyone has a better way? many thank

    $db = Kernel\get_db_adapter();
        try {
            $db->begin();
            $profile->create();
            $adminModel->setProfileId($profile->getId());
            $adminModel->assign($data);
            $adminModel->create();
            $db->commit();
        } catch (Exception $ex) {
            $db->rollback();
            throw $e;
    }