113 lines
3.8 KiB
PHP
113 lines
3.8 KiB
PHP
<?php
|
|
|
|
/*
|
|
* This file is part of the Symfony package.
|
|
*
|
|
* (c) Fabien Potencier <fabien@symfony.com>
|
|
*
|
|
* For the full copyright and license information, please view the LICENSE
|
|
* file that was distributed with this source code.
|
|
*/
|
|
|
|
namespace Symfony\Component\HttpKernel\Fragment;
|
|
|
|
use Symfony\Component\HttpFoundation\RequestStack;
|
|
use Symfony\Component\HttpFoundation\Response;
|
|
use Symfony\Component\HttpFoundation\StreamedResponse;
|
|
use Symfony\Component\HttpKernel\Controller\ControllerReference;
|
|
|
|
/**
|
|
* Renders a URI that represents a resource fragment.
|
|
*
|
|
* This class handles the rendering of resource fragments that are included into
|
|
* a main resource. The handling of the rendering is managed by specialized renderers.
|
|
*
|
|
* @author Fabien Potencier <fabien@symfony.com>
|
|
*
|
|
* @see FragmentRendererInterface
|
|
*/
|
|
class FragmentHandler
|
|
{
|
|
private $debug;
|
|
private $renderers = array();
|
|
private $requestStack;
|
|
|
|
/**
|
|
* @param RequestStack $requestStack The Request stack that controls the lifecycle of requests
|
|
* @param FragmentRendererInterface[] $renderers An array of FragmentRendererInterface instances
|
|
* @param bool $debug Whether the debug mode is enabled or not
|
|
*/
|
|
public function __construct(RequestStack $requestStack, array $renderers = array(), $debug = false)
|
|
{
|
|
$this->requestStack = $requestStack;
|
|
foreach ($renderers as $renderer) {
|
|
$this->addRenderer($renderer);
|
|
}
|
|
$this->debug = $debug;
|
|
}
|
|
|
|
/**
|
|
* Adds a renderer.
|
|
*/
|
|
public function addRenderer(FragmentRendererInterface $renderer)
|
|
{
|
|
$this->renderers[$renderer->getName()] = $renderer;
|
|
}
|
|
|
|
/**
|
|
* Renders a URI and returns the Response content.
|
|
*
|
|
* Available options:
|
|
*
|
|
* * ignore_errors: true to return an empty string in case of an error
|
|
*
|
|
* @param string|ControllerReference $uri A URI as a string or a ControllerReference instance
|
|
* @param string $renderer The renderer name
|
|
* @param array $options An array of options
|
|
*
|
|
* @return string|null The Response content or null when the Response is streamed
|
|
*
|
|
* @throws \InvalidArgumentException when the renderer does not exist
|
|
* @throws \LogicException when no master request is being handled
|
|
*/
|
|
public function render($uri, $renderer = 'inline', array $options = array())
|
|
{
|
|
if (!isset($options['ignore_errors'])) {
|
|
$options['ignore_errors'] = !$this->debug;
|
|
}
|
|
|
|
if (!isset($this->renderers[$renderer])) {
|
|
throw new \InvalidArgumentException(sprintf('The "%s" renderer does not exist.', $renderer));
|
|
}
|
|
|
|
if (!$request = $this->requestStack->getCurrentRequest()) {
|
|
throw new \LogicException('Rendering a fragment can only be done when handling a Request.');
|
|
}
|
|
|
|
return $this->deliver($this->renderers[$renderer]->render($uri, $request, $options));
|
|
}
|
|
|
|
/**
|
|
* Delivers the Response as a string.
|
|
*
|
|
* When the Response is a StreamedResponse, the content is streamed immediately
|
|
* instead of being returned.
|
|
*
|
|
* @return string|null The Response content or null when the Response is streamed
|
|
*
|
|
* @throws \RuntimeException when the Response is not successful
|
|
*/
|
|
protected function deliver(Response $response)
|
|
{
|
|
if (!$response->isSuccessful()) {
|
|
throw new \RuntimeException(sprintf('Error when rendering "%s" (Status code is %s).', $this->requestStack->getCurrentRequest()->getUri(), $response->getStatusCode()));
|
|
}
|
|
|
|
if (!$response instanceof StreamedResponse) {
|
|
return $response->getContent();
|
|
}
|
|
|
|
$response->sendContent();
|
|
}
|
|
}
|