63 lines
1.8 KiB
ReStructuredText
63 lines
1.8 KiB
ReStructuredText
.. include:: /Includes.rst.txt
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.. _feature-104896-1726046146:
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================================================
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Feature: #104896 - Raise Fluid Standalone to 4.0
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================================================
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See :issue:`104896`
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Description
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===========
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TYPO3 13 now uses Fluid 4 as the new base version. Old TYPO3 versions
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will keep using Fluid 2, which will still receive bugfixes if necessary.
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For detailed information about this release, please refer to the
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`dedicated release notes on GitHub <https://github.com/TYPO3/Fluid/releases/tag/4.0.0>`_.
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With the update to Fluid 4, tag-based ViewHelpers now have proper
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support for boolean attributes. Before this change, it was very
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cumbersome to generate these with Fluid, now it is implemented similar
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to popular JavaScript frameworks by using the newly introduced
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boolean literals:
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.. code-block:: html
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<my:viewhelper async="{true}" />
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Result: <tag async="async" />
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<my:viewhelper async="{false}" />
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Result: <tag />
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Of course, any variable containing a boolean can be supplied as well:
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.. code-block:: html
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<my:viewhelper async="{isAsync}" />
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This can also be used in combination with variable casting:
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.. code-block:: html
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<my:viewhelper async="{myString as boolean}" />
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For compatibility reasons empty strings still lead to the attribute
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being omitted from the tag.
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Impact
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======
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For existing installations, negative consequences of this update should be
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minimal as deprecated features will still work. Users are however advised
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to look into the already announced deprecations and to update their code
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accordingly. This update helps with this by now writing log messages to the
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deprecation log (if activated) if any deprecated feature is used in the
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TYPO3 instance.
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.. index:: Fluid, ext:fluid
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