In my application, I'm using the Symfony Twig extension function path to create a link to another route. That route accepts a parameter, so I wrote my path function like this:
<a href="{{ path('r', {p: p}) }}">...</a>
In some cases, the given value p contains a slash and Symfony fails with the error:
"Parameter "p" for route "r" must match "[^/]++" (".../..." given) to generate a corresponding URL.")
I would expect Symfony to deal with this and automatically URL encode these values, but apparently not (or I'm doing something wrong).
Anyway, I managed to fix that with the url_encode Twig filter, like so:
<a href="{{ path('r', {p: p|url_encode}) }}">...</a>
Now in my controller, I accept this parameter like so:
/**
* @Route("/a/b/{p}", name="r")
**/
public function someAction($p) {
// ...
}
And apparently Symfony does not automatically URL decode this value $p, which I'd expect as well.
Am I doing something wrong here, or is it really necessary to handle URL encoding/decoding yourself? In the Symfony docs I don't find any details about this at all.
Apparently the default parameter restrictions don't allow forward slashes. After "loosening" them it worked:
/**
* @Route("/a/b/{p}", name="r", requirements={"diagramResourceId"=".+"})
**/
public function someAction($p) {
// ...
}