---
title: "Breaking: #69863 - Changes in ViewHelpers post Standalone-Fluid"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:breaking-69863-1668719184"
source: "Changelog/8.0/Breaking-69863-ChangesInViewHelpersPostFluidStandalone.rst"
modified: "2026-09-15T10:46:36+00:00"
---

# Breaking: #69863 - Changes in ViewHelpers post Standalone-Fluid

See [forge#69863](https://forge.typo3.org/issues/69863)

## Description

The following ViewHelpers have changed behaviours in Fluid:

-   The `f:case` ViewHelper argument `default` has been marked as deprecated. To indicate which case is the default, use `f:defaultCase`.
-   Tag content of `f:render` is no longer ignored and will be output if called with `optional="1"`.
-   Arguments `iconOnly` and `styleAttributes` have been removed from `f:be.buttons.csh`.
-   Argument `alternateBackgroundColors` has been removed from `f:be.tableList`.
-   ViewHelpers no longer use the `escapingInterceptorEnabled` property but instead use `escapeChildren` and `escapeOutput` to control each behavior.
-   All ViewHelpers no longer initialize standard arguments ("additionalArguments" and "data") in `__construct()`, but instead do this in `initializeArguments()`. If you override this method, you need to make sure you include a call to `parent::initializeArguments()` in your subclass.

The following ViewHelper classes are now only found in namespace `TYPO3FluidFluidViewHelpers` and no longer exist in `TYPO3CMSFluidViewHelpers`:

-   `TYPO3CMSFluidViewHelpersAliasViewHelper`
-   `TYPO3CMSFluidViewHelpersSwitchViewHelper`
-   `TYPO3CMSFluidViewHelpersCaseViewHelper` (present as deprecated alias until final removal)
-   `TYPO3CMSFluidViewHelpersCommentViewHelper`
-   `TYPO3CMSFluidViewHelpersCycleViewHelper`
-   `TYPO3CMSFluidViewHelpersForViewHelper`
-   `TYPO3CMSFluidViewHelpersGroupedForViewHelper`
-   `TYPO3CMSFluidViewHelpersIfViewHelper`
-   `TYPO3CMSFluidViewHelpersThenViewHelper`
-   `TYPO3CMSFluidViewHelpersElseViewHelper`
-   `TYPO3CMSFluidViewHelpersLayoutViewHelper`
-   `TYPO3CMSFluidViewHelpersRenderViewHelper`
-   `TYPO3CMSFluidViewHelpersSectionViewHelper`
-   `TYPO3CMSFluidViewHelpersSpacelessViewHelper`
-   `TYPO3CMSFluidViewHelpersFormatCdataViewHelper`
-   `TYPO3CMSFluidViewHelpersFormatHtmlspecialcharsViewHelper`
-   `TYPO3CMSFluidViewHelpersFormatPrintfViewHelper`
-   `TYPO3CMSFluidViewHelpersFormatRawViewHelper`

## Impact

-   A warning about use of an unregistered argument `default` will be displayed if templates contain `f:case` with `default` argument.
-   Unexpected template output will be output if templates are rendered which contain `<f:render partial/section optional="1">will be output now</f:render>`.
-   A warning about use of an unregistered argument `iconOnly` and/or `styleAttributes` will be displayed if templates contain `f:be.buttons.csh` with either argument.
-   A warning about use of an unregistered argument `alternateBackgroundColors` will be displayed if templates contain `f:be.tableList` with that argument.
-   Any third-party ViewHelpers subclassing any of the classes listed above must change parent class to new namespace.
-   Any third-party ViewHelpers using `escapingInterceptorEnabled` property to disable escaping.

## Affected Installations

Any TYPO3 instance that uses a template which contains:

-   An `f:case` with `default` argument.
-   An `f:render` with `optional="1"` and having content in the `<f:render>` tag.
-   An `f:be.buttons.csh` with either `iconOnly` or `styleAttributes` (value irrelevant).
-   An `f:be.tableList` with `alternateBackgroundColors` (value irrelevant).
-   Any third-party ViewHelper which subclasses any of the classes listed above.
-   Any third-party ViewHelper which uses `escapingInterceptorEnabled` property to disable escaping.

## Migration

-   Remove the `default` option and change `f:case` to `f:defaultCase` for that case.
-   Remove the tag contents of `f:render`.
-   Remove arguments `iconOnly` and `styleAttributes` from `f:be.buttons.csh` where found.
-   Remove argument `alternateBackgroundColors` from `f:be.tableList` where found.
-   Update namespace of parent class in ViewHelpers subclassing any of the classes listed above.
-   Update ViewHelper class to use `escapeChildren` and/or `escapeOutput` depending on desired behavior.