如何从Reitit后端路由中提取路径参数

Question

如何从Reitit后端Clojure路由中获取路径参数？我尝试通过以下方式获取与:id关联的val，但在REPL中不断出现404file not file错误。

["/foo/:id" {:get 
  (fn [{:keys [path-params ]}]
   (some-ns/some-fn (:id path-params)))}]

我尝试过使用https://luminusweb.com/docs/routes.html和https://github.com/metosin/reitit/blob/master/README.md上的文档。

Answer 1

从请求中解构路径参数，然后提取id。

(defn project-routes
  "SPA routing"
  []
  ["" {:middleware [middleware/wrap-base
                    middleware/wrap-formats]}

   ["/foo"
    ["/bar/:id"
     {:get (fn [{:keys [path-params] :as _req}]
             (http-response/ok 
                   (core/READ some-table 
                      (Integer/valueOf (:id path-params)))))}]]])

从https://github.com/luminus-framework/luminus-docs/blob/master/resources/md/sessions_cookies.md获得的文档和示例。使用了控制器，如https://clojureverse.org/t/how-do-you-accomplish-spa-re-frame-teardown/5516/6所述。