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typo3conf/ext/vhs/Classes/ViewHelpers/CallViewHelper.php

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+<?php
+namespace FluidTYPO3\Vhs\ViewHelpers;
+
+/*
+ * This file is part of the FluidTYPO3/Vhs project under GPLv2 or later.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.md file that was distributed with this source code.
+ */
+
+use TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper;
+
+/**
+ * ### Call ViewHelper
+ *
+ * Calls a method on an existing object. Usable as inline or tag.
+ *
+ * ### Examples
+ *
+ *     <!-- inline, useful as argument, for example in f:for -->
+ *     {object -> v:call(method: 'toArray')}
+ *     <!-- tag, useful to quickly output simple values -->
+ *     <v:call object="{object}" method="unconventionalGetter" />
+ *     <v:call method="unconventionalGetter">{object}</v:call>
+ *     <!-- arguments for the method -->
+ *     <v:call object="{object}" method="doSomethingWithArguments" arguments="{0: 'foo', 1: 'bar'}" />
+ *
+ * @author Claus Due <claus@namelesscoder.net>
+ * @package Vhs
+ * @subpackage ViewHelpers
+ */
+class CallViewHelper extends AbstractViewHelper {
+
+	/**
+	 * @param string $method
+	 * @param object $object
+	 * @param array $arguments
+	 * @throws \RuntimeException
+	 * @return mixed
+	 */
+	public function render($method, $object = NULL, array $arguments = array()) {
+		if (NULL === $object) {
+			$object = $this->renderChildren();
+			if (FALSE === is_object($object)) {
+				throw new \RuntimeException('Using v:call requires an object either as "object" attribute, tag content or inline argument', 1356849652);
+			}
+		}
+		if (FALSE === method_exists($object, $method)) {
+			throw new \RuntimeException('Method "' . $method . '" does not exist on object of type ' . get_class($object), 1356834755);
+		}
+		return call_user_func_array(array($object, $method), $arguments);
+	}
+
+}