9.5/_username_view_helper_8php_source.html

<?php

namespace ‪TYPO3\CMS\Belog\ViewHelpers;


/*

 * This file is part of the TYPO3 CMS project.

 *

 * It is free software; you can redistribute it and/or modify it under

 * the terms of the GNU General Public License, either version 2

 * of the License, or any later version.

 *

 * For the full copyright and license information, please read the

 * LICENSE.txt file that was distributed with this source code.

 *

 * The TYPO3 project - inspiring people to share!

 */


use ‪TYPO3\CMS\Core\Utility\GeneralUtility;

use ‪TYPO3\CMS\Extbase\Domain\Repository\BackendUserRepository;

use ‪TYPO3\CMS\Extbase\Object\ObjectManager;

use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;

use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;

use TYPO3Fluid\Fluid\Core\ViewHelper\Traits\CompileWithRenderStatic;


class ‪UsernameViewHelper extends AbstractViewHelper

{

    use CompileWithRenderStatic;


    protected static ‪$usernameRuntimeCache = [];


    public function ‪initializeArguments()

    {

        $this->registerArgument('uid', 'int', 'Uid of the user', true);

    }


    public static function ‪renderStatic(array $arguments, \Closure $renderChildrenClosure, RenderingContextInterface $renderingContext)

    {

        $uid = $arguments['uid'];

        if (isset(static::$usernameRuntimeCache[$uid])) {

            return static::$usernameRuntimeCache[$uid];

        }


        $objectManager = GeneralUtility::makeInstance(ObjectManager::class);

        $backendUserRepository = $objectManager->get(BackendUserRepository::class);

        $user = $backendUserRepository->findByUid($uid);

        // $user may be NULL if user was deleted from DB, set it to empty string to always return a string

        static::$usernameRuntimeCache[$uid] = $user === null ? '' : $user->getUserName();

        return static::$usernameRuntimeCache[$uid];

    }

}