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ArrayElementViewHelper.php
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1 <?php
2 namespace TYPO3\CMS\Beuser\ViewHelpers;
3 
4 /*
5  * This file is part of the TYPO3 CMS project.
6  *
7  * It is free software; you can redistribute it and/or modify it under
8  * the terms of the GNU General Public License, either version 2
9  * of the License, or any later version.
10  *
11  * For the full copyright and license information, please read the
12  * LICENSE.txt file that was distributed with this source code.
13  *
14  * The TYPO3 project - inspiring people to share!
15  */
16 
19 use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
20 use TYPO3Fluid\Fluid\Core\ViewHelper\Traits\CompileWithRenderStatic;
21 
26 {
27  use CompileWithRenderStatic;
28 
32  public function initializeArguments()
33  {
34  parent::initializeArguments();
35  $this->registerArgument('array', 'array', 'Array to search in', true);
36  $this->registerArgument('key', 'string', 'Key to return its value', true);
37  $this->registerArgument('subKey', 'string', 'If result of key access is an array, subkey can be used to fetch an element from this again', false, '');
38  }
39 
49  public static function renderStatic(array $arguments, \Closure $renderChildrenClosure, RenderingContextInterface $renderingContext)
50  {
51  $array = $arguments['array'];
52  $key = $arguments['key'];
53  $subKey = $arguments['subKey'];
54  $result = '';
55  if (is_array($array) && isset($array[$key])) {
56  $result = $array[$key];
57  if (is_array($result) && $subKey && isset($result[$subKey])) {
58  $result = $result[$subKey];
59  }
60  }
61  if (!is_scalar($result)) {
62  throw new Exception('Only scalar return values (string, int, float or double) are supported.', 1382284105);
63  }
64  return $result;
65  }
66 }
static renderStatic(array $arguments,\Closure $renderChildrenClosure, RenderingContextInterface $renderingContext)