TYPO3 Core

Im overriding a backend template using page.tsconfig and added two buttons. These buttons should show up depending on if a CE is in the basket or not.

templates.typo3/cms-backend.1682083422 = vendor/package-name:Resources/Private/TemplateOverrides

PageContentPreviewRenderingEventListener.php

    public function __invoke(PageContentPreviewRenderingEvent $event): void
    {
        $record = $event->getRecord();
        $item = $this->basketItem((string)$record['uid'], $event->getTable(), (int)$record['uid']);

############# SET ADDITIONAL INFORMATION FOR THE RECORD
        $record['inBasket'] = (int)$this->basket->contains($item);
        $event->setRecord($record);
    }

This does not work in Resources/Private/Partials/PageLayout/Record.html when {item.record.inBasket} is used before {item.preview}.

Current workaround:

<f:variable name="triggerPageContentPreviewRenderingEventListener">{item.preview}</f:variable>