.. include:: /Includes.rst.txt
.. _deprecation-99031-1667998430:
=================================================================
Deprecation: #99031 - Deprecated f:format.html in Backend context
=================================================================
See :issue:`99031`
Description
===========
The :html:`` ViewHelper :php:`TYPO3\CMS\Fluid\ViewHelpers\Format\HtmlViewHelper`
should not be used in TYPO3 backend context anymore.
Using this ViewHelper in backend context triggers frontend :typoscript:`parseFunc` logic, which
should be avoided in the backend.
There are other ViewHelpers to output and parse HTML in backend context. See description of
the :ref:`f:sanitize.html ` ViewHelper for more details.
Impact
======
Using :html:`` logs a deprecation level warning.
Affected installations
======================
Instances with extensions that come with backend modules using Fluid rendering and
accessing :html:`` are affected.
Migration
=========
Switch to one of the other ViewHelpers instead, typically :html:``
to secure a given HTML string, :html:`` to parse links in HTML,
or :html:`` to output the HTML as is when the input can be considered
"secure".
.. index:: Backend, Fluid, NotScanned, ext:fluid