Getting HTML of Fluid Template in Controller Action in Typo3

Question

How can I get HTML of a template in my Controller for a specific action.

for Example if I have two actions in one controllers

/**
 * action question
 *
 * @return void
 */
public function questionAction() {}

/**
 * action Answer
 *
 * @return void
 */
public function answerAction() { // here I've needed html code of questionAction's template}

Answer 1

Try this function to get any fluid template html.

    public function getTemplateHtml($controllerName, $templateName, array $variables = array()) {
        /** @var \TYPO3\CMS\Fluid\View\StandaloneView $tempView */
        $tempView = $this->objectManager->get('TYPO3\\CMS\\Fluid\\View\\StandaloneView');

        $extbaseFrameworkConfiguration = $this->configurationManager->getConfiguration(\TYPO3\CMS\Extbase\Configuration\ConfigurationManagerInterface::CONFIGURATION_TYPE_FRAMEWORK);

        $templateRootPath = \TYPO3\CMS\Core\Utility\GeneralUtility::getFileAbsFileName($extbaseFrameworkConfiguration['view']['templateRootPath']);
        $templatePathAndFilename = $templateRootPath . $controllerName . '/' . $templateName . '.html';

        $tempView->setTemplatePathAndFilename($templatePathAndFilename);

        $tempView->assignMultiple($variables);
        $tempHtml = $tempView->render();

        return $tempHtml;
    }

Like in your example, you can call this in your answerAction like:

$this->getTemplateHtml($controllerName, 'question', $optMarkers);