How to use FromRequest with State

[tsxiaofang]

async fn handler(parts: Multipart, State(s): State<Arc>) -> impl IntoResponse {

}

let route = Router::new()
.route("/hello", post(handler).get(handler))
.with_state(Arc::new(1))；

errors like
route("/hello", post(handler).get(handler))
| --- ^^^^^^^ the trait axum::handler::Handler<_, _, _> is not implemented for fn item fn(axum::extract::Multipart, axum::extract::State<std::sync::Arc<i32>>) -> impl futures::Future<Output = impl axum::response::IntoResponse> {pub_handler::handler}
| |
| required by a bound introduced by this call

[tsxiaofang]

Implemented FromRequest object cannot be used with State

[jplatte]

Try https://docs.rs/axum/latest/axum/attr.debug_handler.html.

[davidpdrsn]

Multipart needs to be the last argument:

async fn handler(State(s): State<Arc<...>>, parts: Multipart) -> impl IntoResponse {}

Documented here

[tsxiaofang]

ok, State must at first

[davidpdrsn]

Well no. State can be the first, second, third, whatever, or even last.

But Multipart must be the last.