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typo3/sysext/backend/Classes/ViewHelpers/AvatarViewHelper.php

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+<?php
+namespace TYPO3\CMS\Backend\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\Backend\Backend\Avatar\Avatar;
+use TYPO3\CMS\Core\Database\ConnectionPool;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
+use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
+use TYPO3Fluid\Fluid\Core\ViewHelper\Traits\CompileWithRenderStatic;
+
+/**
+ * Render the avatar markup, including the :html:`<img>` tag, for a given backend user.
+ *
+ * Examples
+ * ========
+ *
+ * Default
+ * -------
+ *
+ * ::
+ *
+ *    <be:avatar backendUser="{user.uid}" size="32" showIcon="true" />
+ *
+ * Output::
+ *
+ *    <span class="avatar">
+ *        <span class="avatar-image">
+ *            <img src="/typo3/sysext/core/Resources/Public/Icons/T3Icons/avatar/avatar-default.svg" width="32" height="32" />
+ *        </span>
+ *    </span>
+ *
+ * If the given backend user hasn't added a custom avatar yet, a default one is used.
+ *
+ * Inline notation
+ * ---------------
+ *
+ * ::
+ *
+ *    {be:avatar(backendUser: user.id, size: 32, showIcon: 'true')}
+ *
+ * Output::
+ *
+ *    <span class="avatar">
+ *        <span class="avatar-image">
+ *            <img src="/fileadmin/_processed_/7/9/csm_custom-avatar_4ea4a18f58.jpg" width="32" height="32" />
+ *        </span>
+ *    </span>
+ */
+class AvatarViewHelper extends AbstractViewHelper
+{
+    use CompileWithRenderStatic;
+
+    /**
+     * As this ViewHelper renders HTML, the output must not be escaped.
+     *
+     * @var bool
+     */
+    protected $escapeOutput = false;
+
+    /**
+     * Initializes the arguments
+     */
+    public function initializeArguments()
+    {
+        $this->registerArgument('backendUser', 'int', 'uid of the backend user', false, 0);
+        $this->registerArgument('size', 'int', 'width and height of the image', false, 32);
+        $this->registerArgument('showIcon', 'bool', 'show the record icon as well', false, false);
+    }
+
+    /**
+     * Resolve user avatar from a given backend user id.
+     *
+     * @param array $arguments
+     * @param \Closure $renderChildrenClosure
+     * @param RenderingContextInterface $renderingContext
+     * @return string
+     */
+    public static function renderStatic(array $arguments, \Closure $renderChildrenClosure, RenderingContextInterface $renderingContext)
+    {
+        if ($arguments['backendUser'] > 0) {
+            $queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class)->getQueryBuilderForTable('be_users');
+            $queryBuilder->getRestrictions()->removeAll();
+            $backendUser = $queryBuilder
+                ->select('*')
+                ->from('be_users')
+                ->where(
+                    $queryBuilder->expr()->eq(
+                        'uid',
+                        $queryBuilder->createNamedParameter($arguments['backendUser'], \PDO::PARAM_INT)
+                    )
+                )
+                ->execute()
+                ->fetch();
+        } else {
+            $backendUser = $GLOBALS['BE_USER']->user;
+        }
+        if ($backendUser === false) {
+            // no BE user can be retrieved from DB, probably deleted
+            return '';
+        }
+        $avatar = GeneralUtility::makeInstance(Avatar::class);
+        return $avatar->render($backendUser, $arguments['size'], $arguments['showIcon']);
+    }
+}