Invalid URL param. wrong number of parameters: 2 expected 1

[shengsheng]

How to get multi path params in handler function?

use axum::{Router, extract::Path, handler::get, response::Html};
use std::net::SocketAddr;

#[tokio::main]
async fn main() {
    // build our application with a route
    let app = Router::new().route("/:type/:id", get(handler));

    // run it
    let addr = SocketAddr::from(([127, 0, 0, 1], 3000));
    println!("listening on {}", addr);
    axum::Server::bind(&addr)
        .serve(app.into_make_service())
        .await
        .unwrap();
}

async fn handler(Path(ty): Path<String>, Path(id): Path<u8>) -> Html<String> {
    let content = format!("<p>{}</p><p>{}</p>", ty, id);
    Html(content)
}

$ curl http://127.0.0.1:3000/abc/1
Invalid URL param. wrong number of parameters: 2 expected 1

[jplatte]

What you need is one Path<(String, u8)> extractor rather than two separate ones.

I wonder whether it would be feasible to make what you wrote work though 🤔

[davidpdrsn]

Oh yeah this is quite subtle.

I wonder whether it would be feasible to make what you wrote work though

If it doesn't introduce too much additional complexity then sure!

[shengsheng]

async fn handler(Path((ty, id)): Path<(String, u8)>) -> Html<String> {
    let content = format!("<p>{}</p><p>{}</p>", ty, id);
    Html(content)
}

Yeah! It's works! Thank you reply so quickly.