Attribute Macro route_param 

#[route_param]

Extracts a specific route parameter into a variable.

This attribute macro retrieves a specific route parameter by key and makes it available as a variable. Route parameters are extracted from the URL path segments.

Usage

use hyperlane::*;
use hyperlane_macros::*;

#[route("/route_param/:test")]
struct RouteParam;

impl ServerHook for RouteParam {
    async fn new(_ctx: &Context) -> Self {
        Self
    }

    #[response_body(&format!("route param: {request_route_param:?}"))]
    #[route_param("test" => request_route_param)]
    async fn handle(self, ctx: &Context) {}
}

impl RouteParam {
    #[route_param("test" => request_route_param)]
    async fn route_param_with_ref_self(&self, ctx: &Context) {}
}

#[route_param("test" => request_route_param)]
async fn standalone_route_param_handler(ctx: &Context) {}

The macro accepts a key-to-variable mapping in the format "key" => variable_name. The variable will be available as an Option<String> in the function scope.