How to pass a custom trait while implementing FromRequestParts

[elliot14A]

Summary

use async_trait::async_trait;
use axum::{
    extract::{FromRef, FromRequestParts},
    http::request::Parts,
};

use crate::{
    error::ApiErrResp,
    repositories::{user::User, DatabaseRepository},
};

pub struct AuthUser(User);

pub struct Database<T: DatabaseRepository> {
    pub db: T,
}

#[async_trait]
impl<T: DatabaseRepository> FromRef<T> for Database<T> {
    fn from_ref(input: &T) -> Self {
        Database {
            db: input.from_reference(),
        }
    }
}

#[async_trait]
impl<S> FromRequestParts<S> for AuthUser
where
    S: Send + Sync,
{
    type Rejection = ApiErrResp;
    async fn from_request_parts(parts: &mut Parts, state: &S) -> Result<Self, Self::Rejection> {
        let db = Database::<S>::from_ref(state);
        unimplemented!()
    }
}

as you can see from the above code DatabaseRepository is a custom trait How should I pass it to FromRequestParts implementation. I tried S: DatabaseRepository + Send + Sync.

#[debug_handler]
pub async fn logout(authuser: AuthUser) -> impl IntoResponse {
    unimplemented!()
}

Then I got the following error:

1.
rustc: the trait bound `(): DatabaseRepository` is not satisfied
the trait `DatabaseRepository` is implemented for `SurrealDriver`
required for `AuthUser` to implement `FromRequest<(), axum_core::extract::private::ViaParts>` [E0277]
2.
rustc: the trait bound `(): DatabaseRepository` is not satisfied
the trait `DatabaseRepository` is implemented for `SurrealDriver`
required for `AuthUser` to implement `FromRequest<(), axum_core::extract::private::ViaParts>`
required for `fn(AuthUser) -> impl std::future::Future<Output = impl IntoResponse> {logout::logout}` to implement `Handler<(axum_core::extract::private::ViaParts, AuthUser), ()>` [E0277]

axum version

0.7.4