.. include:: /Includes.rst.txt .. index:: Events; AfterPackageActivationEvent .. _AfterPackageActivationEvent: =========================== AfterPackageActivationEvent =========================== .. versionadded:: 10.3 The event was introduced to replace the Signal/Slot `\TYPO3\CMS\Extensionmanager\Utility\InstallUtility::afterExtensionInstall`. The PSR-14 event :php:`\TYPO3\CMS\Core\Package\Event\AfterPackageActivationEvent` is triggered after a package has been activated. .. attention:: This event is dispatched when an extension is activated in the :guilabel:`Extension Manager`, therefore starting with TYPO3 v11 this event is only dispatched in legacy installations, not in Composer-based installations. Use `installer events by Composer `__ for Composer-based installations. Example ======= Registration of the event listener in the extension's :file:`Services.yaml`: .. literalinclude:: _AfterPackageActivationEvent/_Services.yaml :language: yaml :caption: EXT:my_extension/Configuration/Services.yaml Read :ref:`how to configure dependency injection in extensions `. An implementation of the event listener: .. literalinclude:: _AfterPackageActivationEvent/_MyEventListener.php :language: php :caption: EXT:my_extension/Classes/Package/EventListener/MyEventListener.php API === .. include:: /CodeSnippets/Events/Core/AfterPackageActivationEvent.rst.txt