Feature: #99807 - Improve ModifyUrlForCanonicalTagEvent¶
See forge#99807
Description¶
The \TYPO3\CMS\Seo\Event\ModifyUrlForCanonicalTagEvent, used by listeners
to manipulate the URL of the canonical tag, has been improved. The event is
is now being dispatched after the standard functionality, such as fetching the
URL from the page properties, has been executed.
Additionally, the event is now even dispatched, in case the canonical tag
generation is disabled via TypoScript disableCanonical or via
page properties no_index. If disabled, the new
\TYPO3\CMS\Seo\Exception\CanonicalGenerationDisabledException is being
thrown in the CanonicalGenerator. The exception is caught and transferred
to the event, allowing listeners to determine whether generation is disabled,
using the new getCanonicalGenerationDisabledException() method, which
either returns the exception with the corresponding reason or null.
Impact¶
By relocating and extending the ModifyUrlForCanonicalTagEvent,
listeners are now able to fully manipulate the canonical tag generation, even
if the generation is disabled and after the standard functionality has been
executed.