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<?php
declare(strict_types=1);
/*
* 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!
*/
namespace TYPO3\CMS\Belog\ViewHelpers;
use TYPO3\CMS\Backend\Utility\BackendUtility;
use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
use TYPO3Fluid\Fluid\Core\ViewHelper\Traits\CompileWithRenderStatic;
/**
* Get username from backend user id
*
* @internal
*/
final class UsernameViewHelper extends AbstractViewHelper
{
use CompileWithRenderStatic;
/**
* First level cache of user names
*/
protected static array $usernameRuntimeCache = [];
/**
* Initializes the arguments
*/
public function initializeArguments(): void
{
$this->registerArgument('uid', 'int', 'Uid of the user', true);
}
/**
* Resolve user name from backend user id. Can return empty string if there is no user with that UID.
*
* @param array{uid: int} $arguments
*/
public static function renderStatic(array $arguments, \Closure $renderChildrenClosure, RenderingContextInterface $renderingContext): string
{
$uid = $arguments['uid'];
if (isset(self::$usernameRuntimeCache[$uid])) {
return self::$usernameRuntimeCache[$uid];
}
$user = BackendUtility::getRecord('be_users', $uid);
self::$usernameRuntimeCache[$uid] = $user['username'] ?? '';
return self::$usernameRuntimeCache[$uid];
}
}