Slim 4 - Base path as query param

Question

I have a Slim 4 app running and set some recurring url param as a base path to not show this in url generation.

Request flows:

1. Call to http:demo.xyz?p1=a ---> rewrite to http://slim.app/url/demo.xyz?p1=a through a Varnish proxy
2. Call to http://slim.app/url/demo.xyz?p1=a directly

Both calls need to work.

Inside a middleware I set /url/demo.xyz as base path so the URLs generated are http://demo.xyz?p1=a.

The problems with this are:

• The base path is not recognized by routes.php as something to pass params, so url/abc is not matched.
• I still need to have the value of the url param to fetch some things inside the Slim app.
• My routes need to match this structure to work with both request flows.

 $app->group('/url/{url}', function (RouteCollectorProxy $group) {
    $group->get('[/[/city/{city}]]', IndexAction::class)->setName('home');
    //...
});

Any idea to get this to work?

This is connected to the question placed here.

Answer 1

In the middleware, you can use Request::getUri() method to get entire uri. Then, if matches with first url format "http:demo.xyz?p1=a" do:

return $response
  ->withHeader('Location', 'https://www.example.com')
  ->withStatus(302);

if matches to "http://slim.app/url/demo.xyz?p1=a" do needed stuff to proceed.