ynh_extension_meeo/actions/AbsencesAction.php

<?php

use YesWiki\Core\YesWikiAction;
use YesWiki\Bazar\Service\EntryManager;

class AbsencesAction extends YesWikiAction
{
    public function formatArguments($arg)
    {
        return [];
    }

    public function run()
    {
        $entryManager = $this->getService(EntryManager::class);
        $entries = $entryManager->search(['formsIds' => '6']);

        $grouped_entries = [];
        foreach ($entries as $entry) {
            $identifier = $entry['listefiche5bf_eleve'];
            if (!isset($grouped_entries[$identifier])) {
                $grouped_entries[$identifier] = [];
            }
            $grouped_entries[$identifier][] = $entry;
        }

        return $this->render('@meeo/absences.twig', [
            "groups" => $grouped_entries,
        ]);
    }
}