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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\Fluid\ViewHelpers\Be\Security;
use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractConditionViewHelper;
/**
* This ViewHelper implements an ifHasRole/else condition for backend users
* and backend groups.
*
* Role refers to backend user groups. The :html:`role` attribute can either be
* the title of a group, or the uid.
*
* Examples
* ========
*
* Basic usage::
*
* <f:be.security.ifHasRole role="Administrator">
* This is being shown in case the current BE user belongs to a BE usergroup (aka role) titled "Administrator" (case sensitive)
* </f:be.security.ifHasRole>
*
* Everything inside the :html:`<f:ifHasRole>` tag is being displayed if the
* logged in backend user belongs to the specified backend group.
*
* Using the usergroup uid as role identifier::
*
* <f:be.security.ifHasRole role="1">
* This is being shown in case the current BE user belongs to a BE usergroup (aka role) with the uid "1"
* </f:be.security.ifHasRole>
*
* Everything inside the :html:`<f:ifHasRole>` tag is being displayed if the
* logged in backend user belongs to the specified backend group.
*
* IfRole / then / else::
*
* <f:be.security.ifHasRole role="Administrator">
* <f:then>
* This is being shown in case you have the role.
* </f:then>
* <f:else>
* This is being displayed in case you do not have the role.
* </f:else>
* </f:be.security.ifHasRole>
*
* Everything inside the :html:`<f:then></f:then>` tag is displayed if the
* logged in backend user belongs to the specified backend group.
* Otherwise, everything inside the :html:`<f:else></f:else>` tag is displayed.
*/
final class IfHasRoleViewHelper extends AbstractConditionViewHelper
{
/**
* Initializes the "role" argument.
* Renders <f:then> child if the current logged in BE user belongs to the specified role (aka usergroup)
* otherwise renders <f:else> child.
*/
public function initializeArguments(): void
{
parent::initializeArguments();
$this->registerArgument('role', 'string', 'The usergroup (either the usergroup uid or its title).');
}
/**
* This method decides if the condition is TRUE or FALSE. It can be overridden in extending viewhelpers to adjust functionality.
*
* @param array $arguments ViewHelper arguments to evaluate the condition for this ViewHelper, allows for flexibility in overriding this method.
*/
protected static function evaluateCondition($arguments = null): bool
{
$role = $arguments['role'];
if (!is_array($GLOBALS['BE_USER']->userGroups) || $arguments['role'] === null) {
return false;
}
if (is_numeric($role)) {
foreach ($GLOBALS['BE_USER']->userGroups as $userGroup) {
if ((int)$userGroup['uid'] === (int)$role) {
return true;
}
}
} else {
foreach ($GLOBALS['BE_USER']->userGroups as $userGroup) {
if ($userGroup['title'] === $role) {
return true;
}
}
}
return false;
}
}