Flexform settings from BE modulle use in controller extbase

Flexform settings from BE modulle use in controller extbase

 /**
     * action flexformcaltypes
     *
     * @param \Typo3\Caltool\Domain\Model\Widget $widget
     * @return void
     */
    public function flexformcaltypesAction($params, $conf) {
        $data = \TYPO3\CMS\Core\Utility\GeneralUtility::xml2array($params['row']['pi_flexform']);
        $widgetId = $data['data']['sDEF']['lDEF']['settings.berekenenkel']['vDEF'];
        $extbaseObjectManager = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance('TYPO3\\CMS\\Extbase\\Object\\ObjectManager');
        $wrep = $extbaseObjectManager->get('Typo3\Caltool\Domain\Repository\WidgetRepository');
        $widgets = $wrep->findByUid($widgetId );
        if(isset($widgets)){
            foreach($widgets->getCalvars() as $calvar){
                $params['items'][] = array( $calvar->getTitle(), $calvar->getUid() );
            }
        }
        return $params;

    }