ring.middleware.flash
Middleware that adds session-based flash store that persists only to the
next request in the same session.
flash-request
added in 1.2
(flash-request request)
Adds :flash key to request from :_flash in session.
flash-response
added in 1.2
(flash-response response request)
If response has a :flash key, saves it in :_flash of session for next
request.
wrap-flash
(wrap-flash handler)
If a :flash key is set on the response by the handler, a :flash key with
the same value will be set on the next request that shares the same session.
This is useful for small messages that persist across redirects.