Middleware in Ring

Middleware in ring is a way to modify the incoming requests or outgoing responses.

Middleware can also wrap handlers or other middleware, affecting their behaviour. For example the wrap-reload middleware enables live reloading by detecting file changes and reloading affected functions into their namespace, before the request is passed to the relevant handler function

Middleware provided by Ring includes:

• In ring/ring-core:
  • wrap-cookies (ring.middleware.cookies)
  • wrap-file (ring.middleware.file)
  • wrap-file-info (ring.middleware.file-info)
  • wrap-flash (ring.middleware.flash)
  • wrap-keyword-params (ring.middleware.keyword-params)
  • wrap-multipart-params (ring.middleware.multipart-params
  • wrap-nested-params (ring.middleware.nested-params
  • wrap-params (ring.middleware.params)
  • wrap-session (ring.middleware.session)
• In ring/ring-devel:
  • wrap-lint (ring.middleware.lint)
  • wrap-reload (ring.middleware.reload)
  • wrap-stacktrace (ring.middleware.stacktrace)