[BUGFIX] Fix issue with type

[sivaprasad1988]

Tasks:

• Fix issue with type in backend preview

[chesio]

I'm not a maintainer, but IMHO it's better to check whether the record actually comes from tt_content table (and bail early if it doesn't):

if ($event->getTable() !== 'tt_content') {
    return;
}

This is what official documentation recommends - see the event listener example here: https://docs.typo3.org/m/typo3/reference-coreapi/12.4/en-us/ApiOverview/Events/Events/Backend/PageContentPreviewRenderingEvent.html

[sivaprasad1988]

@chesio Thank you for the feedback. I agree that adding this makes sense. However, even after checking it, I still see an error.

[achimfritz]

Hi @sivaprasad1988 , when exactly do you see the error?, how can i reproduce this? (i will add the table check, as suggestet)

[sivaprasad1988]

B13\Container\Tca\Registry::isContainerElement(): Argument #1 ($cType) must be of type string, null given, called in /var/www/typo3/releases/1.0.81/vendor/b13/container/Classes/Listener/PageContentPreviewRendering.php on line 33 (0).

@achimfritz this is what I get

[sivaprasad1988]

@achimfritz I added the check

[achimfritz]

ok, but when do you get this? (because i get this never?) (in my db definition the column CType is not nullable?)

[sivaprasad1988]

In the backend, the content element preview is not displaying correctly. I used content blocks to create custom content elements, and the issue occurs specifically with these custom elements. However, the preview works fine for standard content elements. @achimfritz

[achimfritz]

ok, then it looks like an issue with content blocks for me.