.. include:: /Includes.rst.txt

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Breaking: #92118 - TCA ctrl thumbnail setting dropped
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See :issue:`92118`

Description
===========

The TCA setting :php:`$GLOBALS['TCA'][$aTableName]['ctrl']['thumbnail']` has been dropped.


Impact
======

Setting the control field for a custom table has no effect anymore.


Affected Installations
======================

The setting has been used in the :guilabel:`List` module for tables with image fields to render a preview
of attached images. It has been used for :php:`tt_content` in core versions until TYPO3 v7.
There are probably not many extensions using the setting. The :guilabel:`List` module will
no longer show preview images for rendered rows.


Migration
=========

Drop this setting during extension clean up. The setting is simply ignored, no PHP error will be thrown.

.. index:: TCA, NotScanned, ext:recordlist
