---
title: "Breaking: #102715 - Frontend \"determineId()\" related events changed"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:breaking-102715-1703254781"
source: "Changelog/13.0/Breaking-102715-FrontendDetermineIdRelatedEventsChanged.rst"
typo3-version: "13.0"
typo3-major: 13
type: "breaking"
issue: 102715
forge: "https://forge.typo3.org/issues/102715"
tags: ["Frontend", "PHP-API", "PartiallyScanned", "ext:frontend"]
rendered: "2026-09-20T18:31:11+00:00"
---

# Breaking: #102715 - Frontend "determineId()" related events changed {#breaking-102715-1703254781}

See [forge#102715](https://forge.typo3.org/issues/102715)

## Description {#description}

With the continued refactoring of `\TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController`,
the following events have been adapted:

-   `\TYPO3\CMS\Frontend\Event\BeforePageIsResolvedEvent`
-   `\TYPO3\CMS\Frontend\Event\AfterPageWithRootLineIsResolvedEvent`
-   `\TYPO3\CMS\Frontend\Event\AfterPageAndLanguageIsResolvedEvent`

The three events no longer retrieve an instance of `TypoScriptFrontendController`, the
getter methods `getController()` have been removed: The controller is instantiated
*after* the events have been dispatched, event listeners can no longer work with this
object.

Instead, the events now contain an instance of the new DTO
`\TYPO3\CMS\Frontend\Page\PageInformation`, which can be retrieved and
manipulated by event listeners if necessary.

## Impact {#impact}

Calling `getController()` by consumers of above events will raise a fatal
PHP error.

Also note the events may not be dispatched anymore when the middleware
`\TYPO3\CMS\Frontend\Middleware\TypoScriptFrontendInitialization` creates
early responses.

## Affected installations {#affected-installations}

Those events are in place for a couple of special cases during early frontend rendering.
Most instances will not be affected, but some extensions may register event listeners.

## Migration {#migration}

Use method `getPageInformation()` instead to retrieve calculated page state at
this point in the frontend rendering chain. Event listeners that manipulate that
object should set it again within the event using `setPageInformation()`.

In case middleware `TypoScriptFrontendInitialization` no longer dispatches an event
when it created an early response on its own, an own middleware can be added around
that middleware to retrieve and further manipulate a response if needed.