Remove parameters from Symfony 4.4 HttpFoundation\Request and re-generate URL - php

Question

I need to re-generate the URL of my page, removing the additional parameters. For example: when I receive:
/bao1/bao2/?removeMe1=anything&keepMe1=anything&removeMe2=&keepMe2=anything
I want to generate the URL with removeMe query var removed, but with everything else intact. Like this:
/bao1/bao2/?keepMe1=anything&keepMe2=anything
I autowired the request:
public function __construct(RequestStack $httpRequest)
{
$this->httpRequest = $httpRequest;
}
Then I'm playing around like this:
public function getCleanUrl()
{
// HttpFoundation\Request
$currentHttpRequest = $this->httpRequest->getCurrentRequest();
// Trying to remove the parameters
$currentHttpRequest->query->remove("removeMe1");
return $currentHttpRequest->getUri()
}
The query->remove("removeMe1") works, but when I invoke getUri() I still get the full input url, as if remove() was never invoked. I think I'm probably missing to call some kind of $currentHttpRequest->regenerate()->getUri() but I cannot find anything.

Answer 1

To get the modified URL after calling mutator methods on a Request object, you need to call overrideGlobals().
If not, Request methods will give you results accordin to the original superglobals ($_GET, $_POST, $_SERVER). By calling Request::overrideGlobals() you tell the object not to.
E.g.:
if ($request->query->has('amp') && Request::METHOD_GET === $request->getMethod()) {
$request->query->remove('amp');
$request->overrideGlobals();
return new RedirectResponse($request->getUri(), Response::HTTP_MOVED_PERMANENTLY));
}
Or maybe, something more adjusted to your use case (untested, but the general idea should hold):
$queryParams = array_keys($request->query->all());
$goodParams = ['foo', 'bar', 'baz'];
$badParams = array_diff($queryParams, $goodParams);
foreach ($badParams as $badParam) {
$request->query->remove($badParam);
}
$request->overrideGlobals();
// get modified URL
echo $request->getUri();

Answer 2

I had to make this work, so I devised a non-Symfony solution:
$currentHttpRequest = $this->httpRequest->getCurrentRequest();
$arrParams = $currentHttpRequest->query->all();
$arrParams = array_intersect_key($arrParams, array_flip([
"keepMe1", "keepMe2"
]));
$currentUrlNoQs = strtok($currentHttpRequest->getUri(), '?');
if( empty($arrParams) ) {
$canonical = $currentUrlNoQs;
} else {
$queryString = http_build_query($arrParams);
$canonical = $currentUrlNoQs . '?' . $queryString;
}
return $canonical;
I'm not too fond of it, but it got the job done.