FlexformViewHelper

FlexformViewHelper.php

<?php
namespace Smichaelsen\MyExtension\ViewHelpers\Format;

use TYPO3\CMS\Core\Utility\ArrayUtility;
use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper;

/**
 * Usage example
 *
 * <c:format.flexform data="{page.tx_fed_page_flexform}" field="settings.teaserText"/>
 *
 * or
 *
 * <c:format.flexform field="settings.teaserText">{page.tx_fed_page_flexform}</c:fomat.flexform>
 */
class FlexformViewHelper extends AbstractViewHelper {

	public function initializeArguments() {
		parent::initializeArguments();
		$this->registerArgument('data', 'string', 'Flexform XML string', FALSE);
		$this->registerArgument('field', 'string', 'Field to read from the XML', TRUE);
	}

	/**
	 *
	 */
	public function render() {
		$data = $this->renderChildren();
		if (empty($data)) {
			$data = $this->arguments['data'];
		}
		/** @var \TYPO3\CMS\Extbase\Object\ObjectManager $objectManager */
		$objectManager = GeneralUtility::makeInstance('TYPO3\\CMS\\Extbase\\Object\\ObjectManager');
		$fluxService = $objectManager->get('FluidTYPO3\\Flux\\Service\\FluxService');
		$dataArray = ArrayUtility::flatten($fluxService->convertFlexFormContentToArray($data));
		if (!isset($dataArray[$this->arguments['field']])) {
			return NULL;
		}
		return $dataArray[$this->arguments['field']];
	}

}