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159 lines
5 KiB
Markdown
159 lines
5 KiB
Markdown
# reitit [](https://travis-ci.org/metosin/reitit)
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A friendly data-driven router for Clojure(Script).
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* Simple data-driven [route syntax](https://metosin.github.io/reitit/basics/route_syntax.html)
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* Route [conflict resolution](https://metosin.github.io/reitit/basics/route_conflicts.html)
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* First-class [route data](https://metosin.github.io/reitit/basics/route_data.html)
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* Bi-directional routing
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* [Pluggable coercion](https://metosin.github.io/reitit/coercion/coercion.html) ([schema](https://github.com/plumatic/schema) & [clojure.spec](https://clojure.org/about/spec))
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* Extendable
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* Modular
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* [Fast](https://metosin.github.io/reitit/performance.html)
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There are also a separate [Ring-router](https://metosin.github.io/reitit/ring/ring.html) module with [data-driven middleware](https://metosin.github.io/reitit/ring/data_driven_middleware.html).
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See the [full documentation](https://metosin.github.io/reitit/) for details.
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## Latest version
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All bundled:
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```clj
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[metosin/reitit "0.1.0-SNAPSHOT"]
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```
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Optionally, the parts can be required separately:
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```clj
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[metosin/reitit-core "0.1.0-SNAPSHOT"] ; just the router
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[metosin/reitit-ring "0.1.0-SNAPSHOT"] ; ring-router
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[metosin/reitit-spec "0.1.0-SNAPSHOT"] ; spec coercion
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[metosin/reitit-schema "0.1.0-SNAPSHOT"] ; schema coercion
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```
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## Quick start
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```clj
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(require '[reitit.core :as r])
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(def router
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(r/router
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[["/api/ping" ::ping]
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["/api/orders/:id" ::order]]))
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(r/match-by-path router "/api/ping")
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; #Match{:template "/api/ping"
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; :data {:name ::ping}
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; :result nil
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; :params {}
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; :path "/api/ping"}
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(r/match-by-name router ::order {:id 2})
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; #Match{:template "/api/orders/:id",
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; :data {:name ::order},
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; :result nil,
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; :params {:id 2},
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; :path "/api/orders/2"}
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```
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## Ring example
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A Ring routing app with input & output coercion using [data-specs](https://github.com/metosin/spec-tools/blob/master/README.md#data-specs).
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```clj
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(require '[reitit.ring :as ring])
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(require '[reitit.coercion.spec])
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(require '[reitit.ring.coercion-middleware :as mw])
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(def app
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(ring/ring-handler
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(ring/router
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["/api"
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["/math" {:get {:coercion reitit.coercion.spec/coercion
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:parameters {:query {:x int?, :y int?}}
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:responses {200 {:schema {:total pos-int?}}}
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:handler (fn [{{{:keys [x y]} :query} :parameters}]
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{:status 200
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:body {:total (+ x y)}})}}]]
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{:data {:middleware [mw/coerce-exceptions-middleware
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mw/coerce-request-middleware
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mw/coerce-response-middleware]}})))
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```
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Valid request:
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```clj
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(app {:request-method :get
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:uri "/api/math"
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:query-params {:x "1", :y "2"}})
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; {:status 200
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; :body {:total 3}}
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```
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Invalid request:
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```clj
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(app {:request-method :get
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:uri "/api/math"
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:query-params {:x "1", :y "a"}})
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;{:status 400,
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; :body {:type :reitit.coercion/request-coercion,
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; :coercion :spec,
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; :spec "(spec-tools.core/spec {:spec (clojure.spec.alpha/keys :req-un [:$spec20745/x :$spec20745/y]), :type :map, :keys #{:y :x}, :keys/req #{:y :x}})",
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; :problems [{:path [:y],
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; :pred "clojure.core/int?",
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; :val "a",
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; :via [:$spec20745/y],
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; :in [:y]}],
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; :value {:x "1", :y "a"},
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; :in [:request :query-params]}}
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```
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## More info
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[Check out the full documentation!](https://metosin.github.io/reitit/)
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Join [#reitit](https://clojurians.slack.com/messages/reitit/) channel in [Clojurians slack](http://clojurians.net/).
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Roadmap is mostly written in [issues](https://github.com/metosin/reitit/issues).
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## Special thanks
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* Existing Clojure(Script) routing libs, expecially to
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[Ataraxy](https://github.com/weavejester/ataraxy), [Bide](https://github.com/funcool/bide), [Bidi](https://github.com/juxt/bidi), [Compojure](https://github.com/weavejester/compojure) and
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[Pedestal](https://github.com/pedestal/pedestal/tree/master/route).
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* [Compojure-api](https://github.com/metosin/compojure-api), [Kekkonen](https://github.com/metosin/kekkonen), [Ring-swagger](https://github.com/metosin/ring-swagger) and [Yada](https://github.com/juxt/yada) and for ideas, coercion & stuff.
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* [Schema](https://github.com/plumatic/schema) and [clojure.spec](https://clojure.org/about/spec) for the formal validation.
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## Development instructions
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The documentation is built with [gitbook](https://toolchain.gitbook.com). To preview your changes locally:
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```bash
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npm install -g gitbook-cli
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gitbook install
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gitbook serve
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```
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To bump up version:
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```bash
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# new version
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./scripts/set-version "1.0.0"
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./scripts/lein-modules install
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# works
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lein test
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# deploy to clojars
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./scripts/lein-modules do clean, deploy clojars
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```
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## License
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Copyright © 2017 [Metosin Oy](http://www.metosin.fi)
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Distributed under the Eclipse Public License, the same as Clojure.
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