TYPO3 Core

TSFE->cObj is just the page record, so it's not useful here.

An example could be that headline and content of header and bodytext should be available in the class.
So I've to retrieve the fields, which should be in my opinion already available in TSFE->cObj->data.
Never having an uid at least it's not possible to know which record to query.
So it seems to be required to query all applying records and to process them systematically, also using a register property of TSFE, so that a CE isn't processed twice.

Not getting this, this should basically works (not tested, but from the code).

In your user function class, you should access to the parent information with:

$parentData = $this->cObj->parentRecord['data'] ?? null;
$parentCurrentRecord = $this->cObj->parentRecord['currentRecord'] ?? null;

If I remember right, you should have a "setContentObjectRenderer()" method
in your user method to as public $cObj setting is deprectated.

UserInt gehts serialized/deserialized but this information should be existing.

And trying to work with TSFE->cObj looks scary. You should more operate on the
current contentObject and the parent.

Maybe you can provide some code what you are trying to solve ?

$cObj->parentRecord is empty

the method begins like this

    public function start(string $content, array $conf): string
    {
        if (!is_object($this->getTsfe())) {
            return $content;
        }
        $cObj = $this->getTsfe()->cObj;
        $parentData = $cObj->parentRecord['data'] ?? null;
        $parentCurrentRecord = $cObj->parentRecord['currentRecord'] ?? null;
        ...

and actually I want to merge TypoScript with json (we chatted about the json, Stefan).
But that's coming afterwards,first I want to get the cObj though.

Throughout the classes TypoScriptFrontendController and all related classes it's stated that properties are assigned if the record is of type CONTENT or RECORD, but USER / USER int isn't mentioned at all. So actually the behavior is at least consistent to the internal documentation.
Nevertheless it's not sufficient.

Example copied from the code in TypoScriptFrontendController:

    /**
     * This is set to the [table]:[uid] of the latest record rendered. Note that
     * class ContentObjectRenderer has an equal value, but that is pointing to the
     * record delivered in the $data-array of the ContentObjectRenderer instance, if
     * the cObjects CONTENT or RECORD created that instance
     */
    public string $currentRecord = '';

Please provide some more context and information. For example, you could
add the used TypoScript as example. Not fully getting what you are trying
to really do here and why the parent record is needed or not.

Would be nice if you could provide something which can be used to reproduce
this easily and debug this in some way. Cannot get your "configuration" used
and hitting this "issue". That would minimize the time to get a reproducable
state locally running instead of trying to reproduce this with a lot of guessing.

So, please provide an example (TypoScript etc) needed to get/reproduce this.

Hi STefan,

thanks for having a look at it again.
I think the information you ask for is not relevant, I described it already very clear.
The TypoScript is very simple:

asd = USER
asd.userFunc = \XYZ\Abc\....

I added one line (the first one below) and that's solving my case of much headaches, as I've the required data available.
Like this I can access anything that is stored in the CE record.
Without my change it''s almost impossible to determine from which record the call is coming, if several USER elements are on one page.

Class: TYPO3\CMS\Frontend\ContentObject\UserContentObject

        $conf['_data_'] = $this->cObj->data;
        $tempContent = $this->cObj->callUserFunction($conf['userFunc'] ?? '', $conf, '');