CObjectViewHelper.php

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<?php
namespace TYPO3\CMS\Fluid\ViewHelpers;

/*                                                                        *
 * This script is part of the TYPO3 project - inspiring people to share!  *
 *                                                                        *
 * TYPO3 is free software; you can redistribute it and/or modify it under *
 * the terms of the GNU General Public License version 2 as published by  *
 * the Free Software Foundation.                                          *
 *                                                                        *
 * This script is distributed in the hope that it will be useful, but     *
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN-    *
 * TABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General      *
 * Public License for more details.                                       *
 *                                                                        */
class CObjectViewHelper extends \TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper
{
    protected $escapingInterceptorEnabled = false;

    protected $typoScriptSetup;

    protected $tsfeBackup;

    protected $configurationManager;

    public function injectConfigurationManager(\TYPO3\CMS\Extbase\Configuration\ConfigurationManagerInterface $configurationManager)
    {
        $this->configurationManager = $configurationManager;
        $this->typoScriptSetup = $this->configurationManager->getConfiguration(\TYPO3\CMS\Extbase\Configuration\ConfigurationManagerInterface::CONFIGURATION_TYPE_FULL_TYPOSCRIPT);
    }

    public function render($typoscriptObjectPath, $data = null, $currentValueKey = null, $table = '')
    {
        if (TYPO3_MODE === 'BE') {
            $this->simulateFrontendEnvironment();
        }
        if ($data === null) {
            $data = $this->renderChildren();
        }
        $currentValue = null;
        if (is_object($data)) {
            $data = \TYPO3\CMS\Extbase\Reflection\ObjectAccess::getGettableProperties($data);
        } elseif (is_string($data) || is_numeric($data)) {
            $currentValue = (string)$data;
            $data = [$data];
        }
        $contentObject = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer::class);
        $contentObject->start($data, $table);
        if ($currentValue !== null) {
            $contentObject->setCurrentVal($currentValue);
        } elseif ($currentValueKey !== null && isset($data[$currentValueKey])) {
            $contentObject->setCurrentVal($data[$currentValueKey]);
        }
        $pathSegments = \TYPO3\CMS\Core\Utility\GeneralUtility::trimExplode('.', $typoscriptObjectPath);
        $lastSegment = array_pop($pathSegments);
        $setup = $this->typoScriptSetup;
        foreach ($pathSegments as $segment) {
            if (!array_key_exists(($segment . '.'), $setup)) {
                throw new \TYPO3\CMS\Fluid\Core\ViewHelper\Exception('TypoScript object path "' . htmlspecialchars($typoscriptObjectPath) . '" does not exist', 1253191023);
            }
            $setup = $setup[$segment . '.'];
        }
        $content = $contentObject->cObjGetSingle($setup[$lastSegment], $setup[$lastSegment . '.']);
        if (TYPO3_MODE === 'BE') {
            $this->resetFrontendEnvironment();
        }
        return $content;
    }

    protected function simulateFrontendEnvironment()
    {
        $this->tsfeBackup = isset($GLOBALS['TSFE']) ? $GLOBALS['TSFE'] : null;
        $GLOBALS['TSFE'] = new \stdClass();
        $GLOBALS['TSFE']->cObjectDepthCounter = 100;
    }

    protected function resetFrontendEnvironment()
    {
        $GLOBALS['TSFE'] = $this->tsfeBackup;
    }
}