SystemInformationToolbarCollectorEvent

The PSR-14 event \TYPO3\CMS\Backend\Backend\Event\SystemInformationToolbarCollectorEvent allows to enrich the system information toolbar in the TYPO3 backend top toolbar with various information.

Example: Display release information in "System Information" toolbar window

The event SystemInformationToolbarCollectorEvent gets you the object SystemInformationToolbarItem on which you can call method addSystemInformation() to add system information items or method addSystemMessage() to add messages.

        EXT:my_extension/Classes/EventListener/AddReleaseInfoToSystemInformationEventListener.php
    

<?php

namespace MyVendor\MyExample\EventListener;

use TYPO3\CMS\Backend\Backend\Event\SystemInformationToolbarCollectorEvent;
use TYPO3\CMS\Backend\Toolbar\InformationStatus;
use TYPO3\CMS\Core\Attribute\AsEventListener;

#[AsEventListener(
    identifier: 'my-extension/backend/add-release-info-to-system-information',
)]
final class AddReleaseInfoToSystemInformationEventListener
{
    public function __invoke(SystemInformationToolbarCollectorEvent $event): void
    {
        [$releaseDate, $releaseHash, $releaseAge] = $this->getReleaseData();

        $event->getToolbarItem()->addSystemInformation(
            'Release nr / hash',
            $releaseHash ?? 'n/a',
            'actions-cloud-upload',
        );

        if ($releaseAge > 14) {
            $event->getToolbarItem()->addSystemMessage(
                sprintf('Release is %d days old', $releaseAge),
                InformationStatus::WARNING,
                1,
            );
        }

        $event->getToolbarItem()->addSystemInformation(
            'Release date',
            $releaseDate ?? 'n/a',
            'actions-calendar',
        );
    }

    private function getReleaseData(): array
    {
        // Todo:: Implement
        return ['01.10.2025 11:11:11', 'abc123', 15];
    }
}

The messages will then be displayed like this:

TYPO3 Backend Screenshot with custom System Information Icons and a custom message — The release information is now displayed in the "System Information" toolbar item

API

class SystemInformationToolbarCollectorEvent

Fully qualified name: \TYPO3\CMS\Backend\Backend\Event\SystemInformationToolbarCollectorEvent

An event to enrich the system information toolbar in the TYPO3 Backend top toolbar with various information

getToolbarItem ( )

Returns: \TYPO3\CMS\Backend\Backend\ToolbarItems\SystemInformationToolbarItem