Breaking: #82414 - CMS ViewHelper base classes removed

See forge#82414

Description

The following ViewHelper base classes have been removed:

  • \TYPO3\CMS\Fluid\Core\ViewHelper\AbstractConditionViewHelper
  • \TYPO3\CMS\Fluid\Core\ViewHelper\AbstractTagBasedViewHelper
  • \TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper
  • \TYPO3\CMS\Fluid\Core\ViewHelper\ArgumentDefinition

Aliases are in place, but the following key differences may break your code:

  • Render method arguments are no longer possible at all
  • The property $this->controllerContext is no longer defined

Impact

Render method arguments have been deprecated for a long time and should already have been migrated in your code. If you still have ViewHelpers using render method arguments, these will break after this change.

Affected Installations

All instances which use a ViewHelper that either contains render method arguments, extends from one of the base classes above, or or accesses $this->controllerContext.

Migration

Migrate to use renderStatic methods (see examples in TYPO3 Core, EXT:fluid) to not use render method arguments.

ViewHelpers which access $this->controllerContext can instead access $this->renderingContext->getControllerContext().

Instead of using the (now removed) abstract classes from ext:fluid, use the classes supplied in vendor/typo3fluid/fluid:

and change your code accordingly.

Migrating this can be done with search-and-replace for all common use cases.