TYPO3 v15 dev-main snapshot ()

2026-08-10 22:31:09 +02:00
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+.. include:: /Includes.rst.txt
+
+.. _deprecation-94227:
+
+=======================================
+Deprecation: #94227 - f:base ViewHelper
+=======================================
+
+See :issue:`94227`
+
+Description
+===========
+
+The :html:`<f:base>`  ViewHelper isn't suitable in almost all use cases
+and has been deprecated: In most cases the :php:`PageRenderer` takes care of the
+main :html:`<head>` markup, directly, or indirectly via TypoScript :html:`config.baseURL`.
+
+
+Impact
+======
+
+Using the ViewHelper in Fluid templates will log a deprecation warning
+and the ViewHelper will be dropped with v12.
+
+
+Affected Installations
+======================
+
+The limited use of the ViewHelper likely leads to little usage numbers.
+Searching extensions for the string html:`<f:base>` should
+reveal any usages.
+
+
+Migration
+=========
+
+The easiest solution is to simply copy PHP class
+:php:`TYPO3\CMS\Fluid\ViewHelpers\BaseViewHelper` to the consuming extension,
+giving the ViewHelper a happy life in an extension specific namespace.
+
+
+.. index:: Fluid, NotScanned, ext:fluid