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a19849fe58
It's possible to put the :keys keyword in the namespace of the keys one likes to destructure. With that one can use symbols in the vector again. One advantage of having symbols is, that Cursive grays them out if not used. I found two occurrences of unused destructured keys.
38 lines
1.5 KiB
Markdown
38 lines
1.5 KiB
Markdown
# Reverse routing with Ring
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Both the `router` and the `match` are injected into Ring Request (as `::r/router` and `::r/match`) by the `reitit.ring/ring-handler` and with that, available to middleware and endpoints. To convert a `Match` into a path, one can use `r/match->path`, which optionally takes a map of query-parameters too.
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Below is an example how to do reverse routing from a ring handler:
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```clj
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(require '[reitit.core :as r])
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(require '[reitit.ring :as ring])
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(def app
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(ring/ring-handler
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(ring/router
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[["/users"
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{:get (fn [{::r/keys [router]}]
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{:status 200
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:body (for [i (range 10)]
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{:uri (-> router
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(r/match-by-name ::user {:id i})
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;; with extra query-params
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(r/match->path {:iso "möly"}))})})}]
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["/users/:id"
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{:name ::user
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:get (constantly {:status 200, :body "user..."})}]])))
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(app {:request-method :get, :uri "/users"})
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; {:status 200,
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; :body ({:uri "/users/0?iso=m%C3%B6ly"}
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; {:uri "/users/1?iso=m%C3%B6ly"}
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; {:uri "/users/2?iso=m%C3%B6ly"}
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; {:uri "/users/3?iso=m%C3%B6ly"}
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; {:uri "/users/4?iso=m%C3%B6ly"}
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; {:uri "/users/5?iso=m%C3%B6ly"}
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; {:uri "/users/6?iso=m%C3%B6ly"}
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; {:uri "/users/7?iso=m%C3%B6ly"}
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; {:uri "/users/8?iso=m%C3%B6ly"}
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; {:uri "/users/9?iso=m%C3%B6ly"})}
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```
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