TYPO3 v15 dev-main snapshot ()

2026-08-10 22:31:09 +02:00
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+.. include:: /Includes.rst.txt
+
+.. _breaking-61959:
+
+======================================================
+Breaking: #61959 - Move flash message output to alerts
+======================================================
+
+See :issue:`61959`
+
+Description
+===========
+
+Flash messages are now styled by using the native CSS classes of Twitter Bootstrap. The changed classes are:
+
+* "typo3-message message-notice" => "alert alert-notice"
+* "typo3-message message-information" => "alert alert-info"
+* "typo3-message message-ok" => "alert alert-success"
+* "typo3-message message-warning" => "alert alert-warning"
+* "typo3-message message-error" => "alert alert-danger"
+
+Impact
+======
+
+Extensions which use the old classes like "typo3-message message-information" rely on deprecated CSS classes
+which might lead to non styled output.
+
+Affected installations
+======================
+
+Any installation that uses the HTML of flash messages without calling the API.
+
+Migration
+=========
+
+Change the used CSS classes to the new ones.
+
+
+.. index:: Backend, Frontend