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<?php
/**
* Slim - a micro PHP 5 framework
*
* @author Josh Lockhart
* @link http://www.slimframework.com
* @copyright 2011 Josh Lockhart
*
* MIT LICENSE
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
namespace Slim\Extras\Views;
/**
* TwigView
*
* The TwigView is a custom View class that renders templates using the Twig
* template language (http://www.twig-project.org/).
*
* Two fields that you, the developer, will need to change are:
* - twigDirectory
* - twigOptions
*/
class Twig extends \Slim\View
{
/**
* @var string The path to the Twig code directory WITHOUT the trailing slash
*/
public static $twigDirectory = null;
/**
* @var array Paths to directories to attempt to load Twig template from
*/
public static $twigTemplateDirs = array();
/**
* @var array The options for the Twig environment, see
* http://www.twig-project.org/book/03-Twig-for-Developers
*/
public static $twigOptions = array();
/**
* @var TwigExtension The Twig extensions you want to load
*/
public static $twigExtensions = array();
/**
* @var TwigEnvironment The Twig environment for rendering templates.
*/
private $twigEnvironment = null;
/**
* Get a list of template directories
*
* Returns an array of templates defined by self::$twigTemplateDirs, falls
* back to Slim\View's built-in getTemplatesDirectory method.
*
* @return array
**/
private function getTemplateDirs()
{
if (empty(self::$twigTemplateDirs)) {
return array($this->getTemplatesDirectory());
}
return self::$twigTemplateDirs;
}
/**
* Render Twig Template
*
* This method will output the rendered template content
*
* @param string $template The path to the Twig template, relative to the Twig templates directory.
* @param array $data Any additonal data to be passed to the template.
* @return string The rendered template
*/
public function render($template, $data = null)
{
$env = $this->getEnvironment();
$template = $env->loadTemplate($template);
return $template->render(array_merge(
$this->data->all(),
(array) $data)
);
}
/**
* Creates new TwigEnvironment if it doesn't already exist, and returns it.
*
* @return Twig_Environment
*/
public function getEnvironment()
{
if (!$this->twigEnvironment) {
// Check for Composer Package Autoloader class loading
if (!class_exists('\Twig_Autoloader')) {
require_once self::$twigDirectory . '/Autoloader.php';
}
\Twig_Autoloader::register();
$loader = new \Twig_Loader_Filesystem($this->getTemplateDirs());
$this->twigEnvironment = new \Twig_Environment(
$loader,
self::$twigOptions
);
// Check for Composer Package Autoloader class loading
if (!class_exists('\Twig_Extensions_Autoloader')) {
$extension_autoloader = dirname(__FILE__) . '/Extension/TwigAutoloader.php';
if (file_exists($extension_autoloader)) require_once $extension_autoloader;
}
if (class_exists('\Twig_Extensions_Autoloader')) {
\Twig_Extensions_Autoloader::register();
foreach (self::$twigExtensions as $ext) {
$extension = is_object($ext) ? $ext : new $ext;
$this->twigEnvironment->addExtension($extension);
}
}
}
return $this->twigEnvironment;
}
}
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