Breaking: #69863 - Changes in ViewHelpers post Standalone-Fluid 

See forge#69863

Description 

The following ViewHelpers have changed behaviours in Fluid:

  • The f:case ViewHelper argument default has been marked as deprecated. To indicate which case is the default, use f:defaultCase.
  • Tag content of f:render is no longer ignored and will be output if called with optional="1".
  • Arguments iconOnly and styleAttributes have been removed from f:be.buttons.csh.
  • Argument alternateBackgroundColors has been removed from f:be.tableList.
  • ViewHelpers no longer use the escapingInterceptorEnabled property but instead use escapeChildren and escapeOutput to control each behavior.
  • All ViewHelpers no longer initialize standard arguments ("additionalArguments" and "data") in __construct(), but instead do this in initializeArguments(). If you override this method, you need to make sure you include a call to parent::initializeArguments() in your subclass.

The following ViewHelper classes are now only found in namespace TYPO3Fluid\Fluid\ViewHelpers and no longer exist in TYPO3\CMS\Fluid\ViewHelpers:

  • TYPO3\CMS\Fluid\ViewHelpers\AliasViewHelper
  • TYPO3\CMS\Fluid\ViewHelpers\SwitchViewHelper
  • TYPO3\CMS\Fluid\ViewHelpers\CaseViewHelper (present as deprecated alias until final removal)
  • TYPO3\CMS\Fluid\ViewHelpers\CommentViewHelper
  • TYPO3\CMS\Fluid\ViewHelpers\CycleViewHelper
  • TYPO3\CMS\Fluid\ViewHelpers\ForViewHelper
  • TYPO3\CMS\Fluid\ViewHelpers\GroupedForViewHelper
  • TYPO3\CMS\Fluid\ViewHelpers\IfViewHelper
  • TYPO3\CMS\Fluid\ViewHelpers\ThenViewHelper
  • TYPO3\CMS\Fluid\ViewHelpers\ElseViewHelper
  • TYPO3\CMS\Fluid\ViewHelpers\LayoutViewHelper
  • TYPO3\CMS\Fluid\ViewHelpers\RenderViewHelper
  • TYPO3\CMS\Fluid\ViewHelpers\SectionViewHelper
  • TYPO3\CMS\Fluid\ViewHelpers\SpacelessViewHelper
  • TYPO3\CMS\Fluid\ViewHelpers\Format\CdataViewHelper
  • TYPO3\CMS\Fluid\ViewHelpers\Format\HtmlspecialcharsViewHelper
  • TYPO3\CMS\Fluid\ViewHelpers\Format\PrintfViewHelper
  • TYPO3\CMS\Fluid\ViewHelpers\Format\RawViewHelper

Impact 

  • A warning about use of an unregistered argument default will be displayed if templates contain f:case with default argument.
  • Unexpected template output will be output if templates are rendered which contain <f:render partial/section optional="1">will be output now</f:render>.
  • A warning about use of an unregistered argument iconOnly and/or styleAttributes will be displayed if templates contain f:be.buttons.csh with either argument.
  • A warning about use of an unregistered argument alternateBackgroundColors will be displayed if templates contain f:be.tableList with that argument.
  • Any third-party ViewHelpers subclassing any of the classes listed above must change parent class to new namespace.
  • Any third-party ViewHelpers using escapingInterceptorEnabled property to disable escaping.

Affected Installations 

Any TYPO3 instance that uses a template which contains:

  • An f:case with default argument.
  • An f:render with optional="1" and having content in the <f:render> tag.
  • An f:be.buttons.csh with either iconOnly or styleAttributes (value irrelevant).
  • An f:be.tableList with alternateBackgroundColors (value irrelevant).
  • Any third-party ViewHelper which subclasses any of the classes listed above.
  • Any third-party ViewHelper which uses escapingInterceptorEnabled property to disable escaping.

Migration 

  • Remove the default option and change f:case to f:defaultCase for that case.
  • Remove the tag contents of f:render.
  • Remove arguments iconOnly and styleAttributes from f:be.buttons.csh where found.
  • Remove argument alternateBackgroundColors from f:be.tableList where found.
  • Update namespace of parent class in ViewHelpers subclassing any of the classes listed above.
  • Update ViewHelper class to use escapeChildren and/or escapeOutput depending on desired behavior.