Fluidtypo3: Use custom field as title of FCE - typo3

Question

I don't want to use the default header in my FCE's, but only custom flux fields. In the backend list views my FCE's are shown as "[no title]" because the default header is not filled. This leads to much confusion for editors.
How can I define one of my custom flux fields to be used as title for the FCE in TYPO3 Backend list views etc.?

Answer 1

You can't just use a field from the flexform, because all fields from the FCE are stored in the same field in the database (pi_flexform).
What you can do is to render the content element title with a user function. It is registered with a line like this in the TCA config:
$GLOBALS['TCA']['tt_content']['ctrl']['label_userFunc'] = 'Vendor\\Extkey\\Utility\\ContentElementLabelRenderer->getContentElementTitle';
The user function itself could look like this:
<?php
namespace Vendor\Extkey\Utility;
/**
* This class renders a human readable title for FCEs,
* so one is able to find a content element by its headline.
*/
class ContentElementLabelRenderer implements \TYPO3\CMS\Core\SingletonInterface {
/**
* #var \TYPO3\CMS\Extbase\Service\FlexFormService
* #inject
*/
protected $flexFormService = null;
/**
* Returns the content element title for a given content element
*/
public function getContentElementTitle(&$params) {
if (null === $this->flexFormService) {
$this->flexFormService = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance('TYPO3\\CMS\\Extbase\\Service\\FlexFormService');
}
if (ctype_digit($params['row']['uid']) && 'fluidcontent_content' === $params['row']['CType']) {
// If this is a FCE, parse the flexform and template name and generate the
// title in a template specific way.
$row = $params['row'];
$additionalRowData = $GLOBALS['TYPO3_DB']->exec_SELECTgetSingleRow('pi_flexform, tx_fed_fcefile', 'tt_content', 'uid = ' . $row['uid']);
$flexFormContent = $this->flexFormService->convertFlexFormContentToArray($additionalRowData['pi_flexform']);
$lastColonPosition = strrpos($additionalRowData['tx_fed_fcefile'], ':');
$contentElementType = (FALSE === $lastColonPosition) ? 'invalidtype' : substr($additionalRowData['tx_fed_fcefile'], $lastColonPosition + 1);
switch ($contentElementType) {
case 'Image.html':
$params['title'] = 'Image: "' . ($flexFormContent['title'] ?: $flexFormContent['subtitle']) . '"';
break;
default:
$params['title'] = 'Unknown content element type';
break;
}
}
else {
// If this is not a FCEm, print out "normal"
// title. Not the real thing, but comes pretty close, hopefully.
$params['title'] = $params['row']['header'] ?: ($params['row']['subheader'] ?: $params['row']['bodytext']);
}
}
}
This produces a maintainance problem though: Every time you add or change a content element, you have to update this file.