/**
* Add Twig extensions.
*
* @param ExtensionInterface $extension
* @param string $name
*
* @throws \Exception
*/
private function loadExtensionTwig(ExtensionInterface $extension, $name)
{
if (!is_callable([$extension, 'getTwigExtensions'])) {
return;
}
/** @var \Twig_Extension[] $extensions */
$twigExtensions = $extension->getTwigExtensions();
$addTwigExFunc = [$this, 'addTwigExtension'];
foreach ($twigExtensions as $twigExtension) {
$this->app['twig'] = $this->app->share($this->app->extend('twig', function (\Twig_Environment $twig) use($addTwigExFunc, $twigExtension, $name) {
call_user_func($addTwigExFunc, $twig, $twigExtension, $name);
return $twig;
}));
if (!is_callable([$extension, 'isSafe']) || !$extension->isSafe()) {
continue;
}
$this->app['safe_twig'] = $this->app->share($this->app->extend('safe_twig', function (\Twig_Environment $twig) use($addTwigExFunc, $twigExtension, $name) {
call_user_func($addTwigExFunc, $twig, $twigExtension, $name);
return $twig;
}));
}
}
protected function initializeExtension(ExtensionInterface $extension)
{
$name = $extension->getName();
// Attempt to get extension YAML config
try {
$extension->getConfig();
} catch (\Exception $e) {
$this->logInitFailure('Failed to load YAML config', $name, $e, Logger::ERROR);
return;
}
// Call extension initialize()
try {
$extension->initialize();
// Add an object of this extension to the global Twig scope.
$namespace = $this->getNamespace($extension);
if (!empty($namespace)) {
$this->app['twig'] = $this->app->share($this->app->extend('twig', function (\Twig_Environment $twig) use($namespace, $extension) {
$twig->addGlobal($namespace, $extension);
return $twig;
}));
}
} catch (\Exception $e) {
$this->logInitFailure('Initialisation failed', $name, $e, Logger::ERROR);
return;
}
// Flag the extension as initialised
$this->initialized[$name] = $extension;
// If an extension makes it known it sends email, increase the counter
if (is_callable(array($extension, 'sendsMail')) && $extension->sendsMail()) {
$this->mailsenders++;
}
// Get the extension defined snippets
try {
$this->getSnippets($name);
} catch (\Exception $e) {
$this->logInitFailure('Snippet loading failed', $name, $e, Logger::ERROR);
return;
}
// Add Twig extensions
if (!is_callable(array($extension, 'getTwigExtensions'))) {
return;
}
/** @var \Twig_Extension[] $extensions */
$twigExtensions = $extension->getTwigExtensions();
$addTwigExFunc = array($this, 'addTwigExtension');
foreach ($twigExtensions as $twigExtension) {
$this->app['twig'] = $this->app->share($this->app->extend('twig', function (\Twig_Environment $twig) use($addTwigExFunc, $twigExtension, $name) {
call_user_func($addTwigExFunc, $twig, $twigExtension, $name);
return $twig;
}));
if (!is_callable(array($extension, 'isSafe')) || !$extension->isSafe()) {
continue;
}
$this->app['safe_twig'] = $this->app->share($this->app->extend('safe_twig', function (\Twig_Environment $twig) use($addTwigExFunc, $twigExtension, $name) {
call_user_func($addTwigExFunc, $twig, $twigExtension, $name);
return $twig;
}));
}
}
