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Documenting Ring + 404 (Fixes #43)

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Tommi Reiman 2017-11-09 15:59:24 +00:00
parent 35aa09b6a3
commit 7cb66ec413
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doc/ring/ring.md
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@ -112,6 +112,24 @@ Middleware is applied correctly:
; {:status 200, :body [:api :admin :db :delete :handler]} ; {:status 200, :body [:api :admin :db :delete :handler]}
``` ```
# Not found
If no routes match, `nil` is returned, which is not understood by Ring.
Enabling custom error messages:
```clj
(def app
(some-fn
(ring/ring-handler
(ring/router
["/ping" handler]))
(constantly {:status 404})))
(app {:uri "/invalid"})
; {:status 404}
```
# Async Ring # Async Ring
All built-in middleware provide both 2 and 3-arity and are compiled for both Clojure & ClojureScript, so they work with [Async Ring](https://www.booleanknot.com/blog/2016/07/15/asynchronous-ring.html) and [Node.js](https://nodejs.org) too. All built-in middleware provide both 2 and 3-arity and are compiled for both Clojure & ClojureScript, so they work with [Async Ring](https://www.booleanknot.com/blog/2016/07/15/asynchronous-ring.html) and [Node.js](https://nodejs.org) too.