Dynamic route prefix in Symfony2 - php

Question

I am creating a SaaS with symfony2 providing private websites.
What I am trying to do is to let people access the website this way :
http://www.mydomain.com/w/{website_name}
Here is the routing configuration i am using :
websites:
resource: "#MyBundle/Resources/config/routing.yml"
prefix: /w/{website_name}
The problem is that when I try to access, for exemple, http://www.mydomain.com/w/chucknorris I am getting the error :
An exception has been thrown during the rendering of a template ("Some
mandatory parameters are missing ("website_name") to generate a URL
for route "websites_homepage".") in
"MyBundle:Publication:publicationsList.html.twig".
What I understood is that my route configuration is working well but when I am calling the router to generates url in the website it isn't aware of the "context" {website_name} url parameter.
One solution I've imagined is to find a way to automatically and seemlessly inject this parameter when it's set in the context.
Until now all I've been able to do is to create a service to get this parameter this way :
public function __construct(Registry $doctrine, ContainerInterface $container) {
$website_name = $container->get('request')->get("website_name");
if (!empty($website_name)) {
$repository = $doctrine->getManager()->getRepository('MyBundle:website');
$website = $repository->findOneByDomain($website_name);
if ($website) {
$this->website = $website;
} else {
throw new \Symfony\Component\HttpKernel\Exception\NotFoundHttpException();
}
} else {
$this->isPortal = true;
}
}
My question is : How do I inject that argument to all url generated to avoid getting the error of parameter missing and without having to specify it manualy everytime I call the router in controllers or twig ? (I guess it's something about request event but i have no clue on how to do it and especialy how to do it according to symfony2 good usages)
UPDATE
Here is the listener i created base on locallistener provided by symfony:
<?php
class WebsiteNameRouteEventListener implements EventSubscriberInterface {
private $router;
public function __construct(RequestContextAwareInterface $router = null) {
$this->router = $router;
}
public function onKernelResponse(FilterResponseEvent $event) {
$request = $event->getRequest();
$this->setWebsiteName($request);
}
public function onKernelRequest(GetResponseEvent $event) {
$request = $event->getRequest();
$this->setWebsiteName($request);
}
public static function getSubscribedEvents() {
return array(
// must be registered after the Router to have access to the _locale
KernelEvents::REQUEST => array(array('onKernelRequest', 16)),
KernelEvents::RESPONSE => 'onKernelResponse',
);
}
private function setWebsiteName(Request $request) {
if (null !== $this->router) {
echo "NEW CODE IN ACTION";die();
$this->router->getContext()->setParameter('website_name', $request->attributes->get("website_name"));
}
}
}
But i am still getting this error :
An exception has been thrown during the rendering of a template ("Some
mandatory parameters are missing ("website_name") to generate a URL
for route "homepage".") in
"MyBundle:Publication:publicationsList.html.twig". 500 Internal
Server Error - Twig_Error_Runtime 1 linked Exception:
MissingMandatoryParametersException »
Without my echo "...."; die() being executed so i guess twig is not firing the event i am listening on when it execute the path(routename) code.
Any idea ?

Answer 1

You could use the router context.
$this->router->getContext()->setParameter('website_name', $website_name);
See this file: https://github.com/symfony/symfony/blob/master/src/Symfony/Component/HttpKernel/EventListener/LocaleListener.php