---
title: "Deprecation: #95222 - Extbase ViewInterface"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:deprecation-95222"
source: "Changelog/11.5/Deprecation-95222-ExtbaseViewInterface.rst"
modified: "2026-09-15T10:46:36+00:00"
---

# Deprecation: #95222 - Extbase ViewInterface

See [forge#95222](https://forge.typo3.org/issues/95222)

## Description

To further streamline Fluid view-related class inheritance and dependencies,
the interface `\TYPO3\CMS\Extbase\Mvc\View\ViewInterface` has been marked
as deprecated and will be removed in TYPO3 v12.

## Impact

This deprecation has minimal impact on TYPO3 v11:

-   The interface remains available in the Core without triggering
    a E_USER_DEPRECATED warning.
-   ViewInterface primarily differs from other view-related classes by
    requiring an implementation of `initializeView()`, a method that was
    never actively used within TYPO3's Core. This method should not be confused
    with `initializeView()` in Extbase controllers, which is frequently
    implemented by developers and serves a different purpose. The removal
    of `initializeView()` only affects view-related logic and does not
    impact controller initialization.
-   Another deviation is the method `setControllerContext()`, which is
    also deprecated because `ControllerContext` itself is marked
    as deprecated.

## Affected Installations

The extension scanner will detect usages of Extbase `ViewInterface` as a
strong match.

## Migration

### Adjusting initializeView() method signature in controllers

Some extensions may rely on `ViewInterface` type hints, particularly in
the `initializeView()` method of Extbase action controllers. The default
implementation of `initializeView()` in `ActionController` is empty.

In TYPO3 v12:

-   This empty method will be removed from `ActionController`.
-   However, if an `initializeView()` method exists in a subclass of
    `ActionController`, it will still be called.
-   Extension authors should not call `parent::initializeView($view)`, as
    this parent method will no longer exist.
-   The method signature should be updated to prevent PHP
    contravariance violations:

Old:

```php
protected function initializeView(ViewInterface $view)
```

New:

```php
protected function initializeView($view)
```

### Replacing ViewInterface

Instead of using `\TYPO3\CMS\Extbase\Mvc\View\ViewInterface`, extension
authors should switch to:

-   `\TYPO3\CMS\Fluid\View\StandaloneView` — typically in
    non-Extbase-related classes.
-   `\TYPO3Fluid\Fluid\View\ViewInterface` — for a more
    generic replacement.

### Handling Custom Views

If an extension defines a custom view implementing `ViewInterface`, note
that auto-configuration based on this interface will be removed in TYPO3 v12.
As a result, manual service configuration in `Services.yaml` may
be necessary.