Feature: #93494 - New PSR-14 ModifyQueryForLiveSearchEvent

Description

A new PSR-14 event \TYPO3\CMS\Backend\Search\Event\ModifyQueryForLiveSearchEvent has been added to TYPO3 Core. This event is fired in the \TYPO3\CMS\Backend\Search\LiveSearch\LiveSearch class and allows extensions to modify the QueryBuilder instance before execution.

The event features the following methods:

getQueryBuilder(): Returns the current QueryBuilder instance
getTableName(): Returns the table, for which the query will be executed

Registration of the event in your extension's Services.yaml:

MyVendor\MyPackage\EventListener\ModifyQueryForLiveSearchEventListener:
  tags:
    - name: event.listener
      identifier: 'my-package/modify-query-for-live-search-event-listener'

The corresponding event listener class:

use TYPO3\CMS\Backend\Search\Event\ModifyQueryForLiveSearchEvent;

final class ModifyQueryForLiveSearchEventListener
{
    public function __invoke(ModifyQueryForLiveSearchEvent $event): void
    {
        // Get the current instance
        $queryBuilder = $event->getQueryBuilder();

        // Change limit depending on the table
        if ($event->getTableName() === 'pages') {
            $queryBuilder->setMaxResults(2);
        }

        // Reset the orderBy part
        $queryBuilder->resetQueryPart('orderBy');
    }
}

Impact

It is now possible to use a new PSR-14 event for modifying the live search query. This can be used, for example, to adjust the limit for a specific table or to change the result order.