#[handler]Expand description
Registers an async function as an HTTP route handler.
ยงSyntax
#[handler(METHOD, "/path")]
#[handler(METHOD, "/path", middleware = [mw_fn, factory("arg")])]Supported methods: GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS.
Path parameters expressed as {name} in the route string are automatically
extracted. Declare a matching function parameter by name and the macro rewrites
the signature to use axum::extract::Path under the hood. Undeclared path
params are captured but silently ignored (partial extraction).
Handler-level middleware is attached with #[middleware(...)] on the
function, separate from the route registration attribute.