9.5/_array_element_view_helper_8php_source.html

<?php

namespace ‪TYPO3\CMS\Beuser\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\Beuser\Exception;

use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;

use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;

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


class ‪ArrayElementViewHelper extends AbstractViewHelper

{

    use CompileWithRenderStatic;


    public function ‪initializeArguments()

    {

        $this->registerArgument('array', 'array', 'Array to search in', true);

        $this->registerArgument('key', 'string', 'Key to return its value', true);

        $this->registerArgument('subKey', 'string', 'If result of key access is an array, subkey can be used to fetch an element from this again', false, '');

    }


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

    {

        $array = $arguments['array'];

        $key = $arguments['key'];

        $subKey = $arguments['subKey'];

        $result = '';

        if (is_array($array) && isset($array[$key])) {

            $result = $array[$key];

            if (is_array($result) && $subKey && isset($result[$subKey])) {

                $result = $result[$subKey];

            }

        }

        if (!is_scalar($result)) {

            throw new ‪Exception('Only scalar return values (string, int, float or double) are supported.', 1382284105);

        }

        return $result;

    }

}