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Update docs for slash-handler

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Composing routes isn't explained until later, so anyone reading the docs from start to finish would not know how to use the default-handler and slash-handler together until they read the resource-handler section. Took me a bit of time to realize this so hopefully something like this would save a bit of work for other new users.
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Shaun Mahood 2018-11-05 14:24:17 -07:00 committed by GitHub
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18
doc/ring/slash_handler.md
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@ -66,3 +66,21 @@ Setting the `redirect-trailing-slash-handler` as a second argument to `ring-hand
(app {:uri "/pong"})
; {:status 308, :headers {"Location" "/pong/"}, :body ""}
```
`redirect-trailing-slash-handler` can be composed with the default handler using `ring/routes` for more correct http error responses:
```clj
(def app
(ring/ring-handler
(ring/router
[["/ping" (constantly {:status 200, :body ""})]
["/pong/" (constantly {:status 200, :body ""})]])
(ring/routes
(ring/redirect-trailing-slash-handler {:method :add})
(ring/create-default-handler))))
(app {:uri "/ping/"})
; {:status 404, :body "", :headers {}}
(app {:uri "/pong"})
; {:status 308, :headers {"Location" "/pong/"}, :body ""}
```