Route layers for route functions

[pasha-vuiko]

First of all, thank you so much for this great library! I enjoy the code first experience with auto generated docs.

Currently for aide::axum::routing::{delete, get, patch, put, post} and other routing functions it is impossible to set route layers.
For example this code is valid for axum::routing::{delete, get, patch, put, post} :

let routes = Router::new()
        .route(
            "/",
            get(expenses_handlers::find_many)
                .route_layer(cache_layer.clone())
                .route_layer(auth_layer.verify(vec![Roles::Admin, Roles::Customer])),
        )
        .route(
            "/:id",
            get(expenses_handlers::find_one)
                .route_layer(cache_layer)
                .route_layer(auth_layer.verify(vec![Roles::Admin, Roles::Customer])),
        )

but with aide::axum::routing functions there is no .route_layer() function, only .layer() function is available, but it is impossible to use multiple .layer() function for a specific route. So it would be great if this code become valid:

let routes = ApiRouter::new()
        .api_route(
            "/",
            get(expenses_handlers::find_many)
                .route_layer(cache_layer.clone()) // TODO Find out how to add multiple layers
                .route_layer(auth_layer.verify(vec![Roles::Admin, Roles::Customer])),
        )
        .api_route(
            "/:id",
            get(expenses_handlers::find_one)
                .route_layer(cache_layer) // TODO Find out how to add multiple layers
                .route_layer(auth_layer.verify(vec![Roles::Admin, Roles::Customer])),
        )

But currently following errors is received:

error[E0599]: no method named `route_layer` found for struct `ApiMethodRouter` in the current scope
  --> src/api/expenses/mod.rs:47:18
   |
46 | /             get(expenses_handlers::find_many)
47 | |                 .route_layer(cache_layer.clone())
   | |                 -^^^^^^^^^^^ method not found in `ApiMethodRouter<_, _>`
   | |_________________|
   | 

error[E0599]: no method named `route_layer` found for struct `ApiMethodRouter` in the current scope
  --> src/api/expenses/mod.rs:53:18
   |
52 | /             get(expenses_handlers::find_one)
53 | |                 .route_layer(cache_layer)
   | |                 -^^^^^^^^^^^ method not found in `ApiMethodRouter<_, _>`
   | |_________________|

[pasha-vuiko]

All you need to do is to add following method right next to layer() method in ApiMethodRouter

    /// This method wraps a route_layer around the [`ApiMethodRouter`]
    /// For further information see [`axum::routing::method_routing::MethodRouter::route_layer`]
    pub fn route_layer<L>(self, layer: L) -> ApiMethodRouter<S, B, Infallible>
        where
            L: Layer<Route<B, Infallible>> + Clone + Send + 'static,
            L::Service: Service<Request<B>, Error = Infallible> + Clone + Send + 'static,
            <L::Service as Service<Request<B>>>::Response: IntoResponse + 'static,
            <L::Service as Service<Request<B>>>::Future: Send + 'static,
    {
        ApiMethodRouter {
            router: self.router.route_layer(layer),
            operations: self.operations,
        }
    }

[pasha-vuiko]

What do you think?

[tamasfe]

I've added a PR that aligns the routing interface with axum's that adds this method as well.

[pasha-vuiko]

thank you