IfHasRoleViewHelper.php

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<?php
namespace TYPO3\CMS\Fluid\ViewHelpers\Be\Security;

/*                                                                        *
 * This script is backported from the TYPO3 Flow package "TYPO3.Fluid".   *
 *                                                                        *
 * It is free software; you can redistribute it and/or modify it under    *
 * the terms of the GNU Lesser General Public License, either version 3   *
 *  of the License, or (at your option) any later version.                *
 *                                                                        *
 *                                                                        *
 * This script is distributed in the hope that it will be useful, but     *
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN-    *
 * TABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser       *
 * General Public License for more details.                               *
 *                                                                        *
 * You should have received a copy of the GNU Lesser General Public       *
 * License along with the script.                                         *
 * If not, see http://www.gnu.org/licenses/lgpl.html                      *
 *                                                                        *
 * The TYPO3 project - inspiring people to share!                         *
 *                                                                        */
class IfHasRoleViewHelper extends \TYPO3\CMS\Fluid\Core\ViewHelper\AbstractConditionViewHelper {

    public function render($role) {
        if ($this->backendUserHasRole($role)) {
            return $this->renderThenChild();
        } else {
            return $this->renderElseChild();
        }
    }

    protected function backendUserHasRole($role) {
        if (!is_array($GLOBALS['BE_USER']->userGroups)) {
            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;
    }
}