TYPO3 v15 dev-main snapshot ()

2026-08-10 22:31:09 +02:00
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+.. include:: /Includes.rst.txt
+
+.. _feature-104020-1718381897:
+
+====================================================
+Feature: #104020 - ViewHelper to check feature flags
+====================================================
+
+See :issue:`104020`
+
+Description
+===========
+
+The `<f:feature>` ViewHelper allows integrators to check for feature flags from within Fluid
+templates. The ViewHelper follows the same rules as the underlying TYPO3 api, which means
+that undefined flags will be treated as `false`.
+
+Examples
+========
+
+Basic usage
+-----------
+
+::
+
+   <f:feature name="myFeatureFlag">
+      This is being shown if the flag is enabled
+   </f:feature>
+
+feature / then / else
+---------------------
+
+::
+
+   <f:feature name="myFeatureFlag">
+      <f:then>
+         Flag is enabled
+      </f:then>
+      <f:else>
+         Flag is undefined or not enabled
+      </f:else>
+   </f:feature>
+
+
+Impact
+======
+
+Feature flags can now be checked from within Fluid templates.
+
+.. index:: Fluid, ext:fluid