chickadee » schematra » use-middleware!

Install middleware functions that process requests before route handlers. Must be called within a with-schematra-app context.

Middleware signature:

(define (my-middleware next)
  ;; Process request before handler
  (let ((response (next)))  ; Call next middleware or handler
    ;; Process response after handler
    response))

Middleware can access and modify request parameters using (current-params) and (current-params new-params).