sample_indexplugin_and_extradata.php

<?php

use Opencontent\Opendata\Api\Values\ExtraData;
use Opencontent\Opendata\Api\Values\ExtraDataProviderInterface;

class ezfIndexAccountInfo implements ezfIndexPlugin, ExtraDataProviderInterface
{
    /**
     * @param eZContentObject $contentObject
     * @param eZSolrDoc[] $docList
     */
    public function modify(eZContentObject $contentObject, &$docList)
    {
        try {
            $user = eZUser::fetch($contentObject->ID);
            if ($user instanceof eZUser) {
                $availableLanguages = $contentObject->currentVersion()->translationList(false, false);
                foreach ($availableLanguages as $languageCode) {
                    $docList[$languageCode]->addField('extra_login_count_si', $user->loginCount());
                    $docList[$languageCode]->addField('extra_last_visit_si', $user->lastVisit());
                }
            }

        } catch (Exception $e) {
            eZDebug::writeError($e->getMessage(), __METHOD__);
        }
    }

    public function setExtraDataFromContentObject(eZContentObject $object, ExtraData $extraData)
    {
        try {
            $user = eZUser::fetch($contentObject->ID);
            if ($user instanceof eZUser) {
                $availableLanguages = $contentObject->currentVersion()->translationList(false, false);
                foreach ($availableLanguages as $languageCode) {
                    $extraData->set('login_count', $user->loginCount(), $languageCode);
                    $extraData->set('last_visit', $user->lastVisit(), $languageCode);
                }
            }

        } catch (Exception $e) {
            eZDebug::writeError($e->getMessage(), __METHOD__);
        }
    }
}