Support wildcards in typed paths

[davidpdrsn]

Fixes #996

Well that was easy 😅

[jplatte]

Vec<String> as another test case would be good I think. Also making sure the right thing ends up in here. But maybe that's covered for non-typed paths so there's not much of a point?

[davidpdrsn]

Actually thats why I thought supporting wildcards was goanna be hard but turns out Path doesn't split wildcards into multiple segments at all. So if you do

let app = Router::new().route("/*rest", get(handler));

async fn handler(Path(rest): Path<Vec<String>>) {
    dbg!(rest);
}

and then call GET /foo/a/b rest will be ["/foo/a/b"]. It doesn't automatically know to split things by /.

If you do

#[derive(Deserialize, Debug)]
struct Params {
    rest: Vec<String>
}

async fn handler(Path(rest): Path<Params>) {
    dbg!(&rest);
}

Path will fail with Unsupported type alloc::vec::Vecalloc::string::String`.

So users would have to write their own deserializer to do that.

[jplatte]

Huh, okay.