TwigMacro

BasePresenter.php

<?php

public function templatePrepareFilters($template) {
		$template->registerFilter($latte = new Nette\Templates\LatteFilter());
		TwigMacro::register($latte->getHandler());
	}

TwigMacro.php

<?php

use Nette\Templates\LatteMacros;
use Nette\Debug;

/**
 * @author Pavel Kalvoda
 * @author Filip Procházka
 */
class TwigMacro {
	const SEPARATOR = '.';

	/** @var Nette\Templates\LatteMacros */
	protected static $latte;

	/**
	 * @param Nette\Templates\LatteMacros $latte
	 */
	public static function register(LatteMacros $latte) {
		// nefuguje! vizte DefaultMacros, line 303
		$latte->macros['!~$'] = '<?php %' . __CLASS__ . '::expandRaw% ?>';
		$latte->macros['!~'] = '<?php %' . __CLASS__ . '::expandRaw% ?>';

		$latte->macros['~$'] = '<?php %' . __CLASS__ . '::expand% ?>';
		$latte->macros['~'] = '<?php %' . __CLASS__ . '::expand% ?>';

		self::$latte = $latte;
	}

	/**
	 * @param mixed $path
	 * @param mixed $modifiers
	 * @param bool $escape
	 * @return string
	 */
	public static function expandRaw($path, $modifier) {
		return self::expand($path, $modifiers, false);
	}

	/**
	 * @param mixed $path
	 * @param mixed $modifiers
	 * @param bool $escape
	 * @return string
	 */
	public static function expand($path, $modifiers, $escape = true) {
		$frags = explode(self::SEPARATOR, $path);
		$result = __CLASS__ . '::travel($' . array_shift($frags) . ', '
			. var_export($frags, true) . ',' . var_export($escape, true) . ')';
		return 'echo ' . self::$latte->formatModifiers($result, $modifiers) . ';';
	}

	/**
	 * @param object|array $element
	 * @param array $path
	 * @param bool $escape
	 * @return mixed
	 */
	public static function travel($element, array $path = array(), $escape = true) {
		foreach ($path as $leaf) {
			Nette\Debug::barDump($element, "Elem");
			if ((is_array($element) || $element instanceof \ArrayAccess) && isset($element[$leaf])) { // http://www.php.net/manual/en/function.is-array.php#48083
				$element = $element[$leaf];
				continue;
			} elseif (is_object($element)) {
				if (method_exists($element, $method = "get" . ucfirst($leaf))) {
					$element = $element->$method();
					continue;
				} elseif (isset($element->$leaf)) {
					$element = $element->$leaf;
					continue;
				}
			}

			throw new \InvalidStateException("Given structure doesn't contain specified offset, property, or getter method.");
		}

		return $escape ? htmlSpecialChars($element, ENT_QUOTES) : $element;
	}

}