fix: avoid undefined array key "addRootLineFields" in TYPO3 v13.2

CHANGELOG.md

@@ -7,6 +7,9 @@ to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
 
+### Fixed
+- Undefined array key "addRootLineFields" in TYPO3 v13.2
+
 ## [3.4.0] - 2024-02-16
 
 ### Updated

Documentation/Changelog/Index.rst

@@ -11,6 +11,12 @@ to `Semantic Versioning <https://semver.org/spec/v2.0.0.html>`_.
 `Unreleased <https://github.com/brotkrueml/schema/compare/v3.4.0...HEAD>`_
 ------------------------------------------------------------------------------
 
+Fixed
+^^^^^
+
+
+* Undefined array key "addRootLineFields" in TYPO3 v13.2
+
 `3.4.0 <https://github.com/brotkrueml/schema/compare/v3.3.0...v3.4.0>`_ - 2024-02-16
 ----------------------------------------------------------------------------------------
 

ext_localconf.php

@@ -9,7 +9,12 @@
 
 defined('TYPO3') || die();
 
-$GLOBALS['TYPO3_CONF_VARS']['FE']['addRootLineFields'] .= ',nav_hide,tx_schema_webpagetype';
+if (isset($GLOBALS['TYPO3_CONF_VARS']['FE']['addRootLineFields'])) {
+    // Since TYPO3 v13.2 the addRootLineFields are not necessary anymore
+    // This configuration can be removed once compatibility with TYPO3 v12 is gone
+    // @see https://docs.typo3.org/c/typo3/cms-core/main/en-us/Changelog/13.2/Deprecation-103752-ObsoleteGLOBALSTYPO3_CONF_VARSFEaddRootLineFields.html
+    $GLOBALS['TYPO3_CONF_VARS']['FE']['addRootLineFields'] .= ',nav_hide,tx_schema_webpagetype';
+}
 
 $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_pagerenderer.php']['render-postProcess'][] =
     SchemaMarkupInjection::class . '->execute';