Feature: #109018 - PSR-14 event to modify indexed_search result sets 

Description 

A new PSR-14 event \TYPO3\CMS\IndexedSearch\Event\AfterSearchResultSetsAreGeneratedEvent has been introduced to modify complete search result sets in \TYPO3\CMS\IndexedSearch\Controller\SearchController .

The event is dispatched in searchAction() after all result sets have been built. Event listeners can manipulate complete result sets, including pagination, rows, section data, and category metadata.

The event provides the following methods:

• getResultSets(): Returns all result sets of the current search.
• setResultSets(array $resultSets): Replaces the result sets.
• getSearchData(): Returns the search configuration array.
• getSearchWords(): Returns the array of search words.
• getView(): Returns the view instance.
• getRequest(): Returns the current server request.

Example 

The following example replaces every result set pagination with SlidingWindowPagination:

<?php

declare(strict_types=1);

namespace MyVendor\MyExtension\EventListener;

use TYPO3\CMS\Core\Attribute\AsEventListener;
use TYPO3\CMS\Core\Pagination\SimplePagination;
use TYPO3\CMS\Core\Pagination\SlidingWindowPagination;
use TYPO3\CMS\IndexedSearch\Event\AfterSearchResultSetsAreGeneratedEvent;

#[AsEventListener(identifier: 'my-extension/modify-search-result-sets')]
final readonly class ModifySearchPaginationListener
{
    public function __invoke(AfterSearchResultSetsAreGeneratedEvent $event): void
    {
        $resultSets = $event->getResultSets();
        foreach ($resultSets as $key => $resultSet) {
            if (($resultSet['pagination'] ?? null) instanceof SimplePagination) {
                $resultSets[$key]['pagination'] = new SlidingWindowPagination(
                    $resultSet['pagination']->getPaginator(),
                    5
                );
            }
        }

        $event->setResultSets($resultSets);
    }
}

Impact 

This event allows modifying complete search result sets in a single listener call. It enables custom pagination strategies as well as advanced search result transformations.