60 lines
2.0 KiB
ReStructuredText
60 lines
2.0 KiB
ReStructuredText
.. include:: /Includes.rst.txt
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.. _breaking-102924-1706178654:
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===================================================================
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Breaking: #102924 - Single Table Inheritance from fe_groups removed
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===================================================================
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See :issue:`102924`
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Description
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===========
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Extbase ships with a feature called "Single Table Inheritance", to allow
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multiple Extbase domain models reflecting one database table depending on a
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specific value of a database field.
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TYPO3 has the functionality enabled for the database tables :sql:`fe_users` and
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:sql:`fe_groups`.
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The respective default models, which do not make a lot of sense as models
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depend on a specific domain, have been removed in previous TYPO3 versions.
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For frontend user groups, the usage and the usefulness for TYPO3 to ship this out
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of the box, has shown little impact. For this reason, the functionality has been
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removed. Along with that, the database field :sql:`fe_groups.tx_extbase_type` and its
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TCA definition as well as the Extbase configuration as a single table inheritance
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option, has been removed.
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The functionality for Single Table Inheritance in Extbase and also for frontend
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users is working as before without any changes.
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.. _Single Table Inheritance: https://en.wikipedia.org/wiki/Single_Table_Inheritance
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Impact
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======
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Using the database field in custom code, or using Single Table Inheritance in
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Extbase for frontend user groups will result in SQL and PHP errors.
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Affected installations
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======================
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TYPO3 installations with custom extensions using Single Table Inheritance in
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Extbase with frontend usergroups.
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Migration
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=========
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If necessary, extension authors can add Single Table Inheritance in their own
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extension for `fe_groups` by themselves.
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* Add a database field :sql:`fe_groups.tx_extbase_type` in :file:`ext_tables.sql`
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* Add TCA information in :file:`Configuration/TCA/Overrides/fe_groups.php` for the database field
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.. index:: Database, TCA, NotScanned, ext:extbase
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