How to get ancestor path from a nested router?

[dulguun0225]

I wanna redirect to one of my own paths without hardcoding what my ancestor path is.

use std::net::SocketAddr;

use axum::{response::Redirect, routing::get, Router};

fn users_router() -> Router {
    Router::new()
        .route("/", get(|| async { "users index" })) 
        .route("/fallback", get(|| async { "users fallback"}))
        // make it redirect without hardcoding /users part.
        .fallback(|| async { Redirect::to("/users/fallback") })
}

#[tokio::main]
async fn main() {
    let app = Router::new().nest("/users", users_router());
    
    axum::Server::bind(&SocketAddr::from(([127, 0, 0, 1], 5000)))
        .serve(app.into_make_service())
        .await
        .unwrap()
}

Maybe I could pass ancestor path to the users_router function. But it could get tedious when things are nested deeply.

[davidpdrsn]

This feels like something we should support. Do you wanna open an issue about it?

[jplatte]

Seems closely related to #1731

[davidpdrsn]

Indeed!

[dulguun0225]

Done!