I am making a simple Clojure web-app to be deployed on Heroku consisting of one html and one css file. I created the file using the "lein new heroku MYAPP" command and am trying to modify it from a simple "hello world" to have it render an html file in another folder on startup. I have managed to get the html to load on a local host in my browser, but it is not being modified by the css when I do it. What do I need to change to get the css to modify the html to have it render properly in the browser and then deploy to heroku?
html:
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="style.css" />
</head>
<body>
<img id="sun" src="http://goo.gl/dEEssP">
<div id='earth-orbit'>
<img id="earth" src="http://goo.gl/o3YWu9">
</div>
</body>
</html>
project.clj
(defproject solar_system "1.0.0-SNAPSHOT"
:description "FIXME: write description"
:url "http://solar_system.herokuapp.com"
:license {:name "FIXME: choose"
:url "http://example.com/FIXME"}
:dependencies [[org.clojure/clojure "1.5.1"]
[compojure "1.1.1"]
[ring/ring-jetty-adapter "1.1.0"]
[ring/ring-devel "1.1.0"]
[ring-basic-authentication "1.0.1"]
[environ "0.2.1"]
[com.cemerick/drawbridge "0.0.6"]]
:uberjar-name "solar_system-standalone.jar"
:min-lein-version "2.0.0"
:plugins [[environ/environ.lein "0.2.1"]]
:hooks [environ.leiningen.hooks]
:profiles {:production {:env {:production true}}})
web.clj:
(ns solar_system.web
(:require [compojure.core :refer [defroutes GET PUT POST DELETE ANY]]
[compojure.handler :refer [site]]
[compojure.route :as route]
[clojure.java.io :as io]
[ring.middleware.stacktrace :as trace]
[ring.middleware.session :as session]
[ring.middleware.session.cookie :as cookie]
[ring.adapter.jetty :as jetty]
[ring.middleware.basic-authentication :as basic]
[cemerick.drawbridge :as drawbridge]
[environ.core :refer [env]]))
(defn- authenticated? [user pass]
;; TODO: heroku config:add REPL_USER=[...] REPL_PASSWORD=[...]
(= [user pass] [(env :repl-user false) (env :repl-password false)]))
(def ^:private drawbridge
(-> (drawbridge/ring-handler)
(session/wrap-session)
(basic/wrap-basic-authentication authenticated?)))
(defroutes app
(ANY "/repl" {:as req}
(drawbridge req))
(GET "/" []
{:status 200
:headers {"Content-Type" "text/html"}
:body (slurp (io/resource "index.html"))})
(ANY "*" []
(route/not-found (slurp (io/resource "404.html")))))
(defn wrap-error-page [handler]
(fn [req]
(try (handler req)
(catch Exception e
{:status 500
:headers {"Content-Type" "text/html"}
:body (slurp (io/resource "500.html"))}))))
(defn -main [& [port]]
(let [port (Integer. (or port (env :port) 5000))
;; TODO: heroku config:add SESSION_SECRET=$RANDOM_16_CHARS
store (cookie/cookie-store {:key (env :session-secret)})]
(jetty/run-jetty (-> #'app
((if (env :production)
wrap-error-page
trace/wrap-stacktrace))
(site {:session {:store store}}))
{:port port :join? false})))
;; For interactive development:
;; (.stop server)
;; (def server (-main))
here is the directory tree. The html and css files are in resources (with the error.html files), web.clj is in src/solar_system and project.clj is in the root folder:
solar_system
├── resources
├── src
│ └── solar_system
├── target
│ ├── classes
│ └── stale
└── test
└── solar_system
I don't know why the lein new heroku _ template doesn't do this for you.
Use compojure.route/resources to tell the handler where to look for static files.
(defroutes app
(ANY "/repl" ...)
(GET "/" [] ...)
(route/resources "/")
(ANY "*" [] ...))
Now, if you visit http://example.com/style.css, it will expect resources/public/style.css.
Aside: It's better to serve static assets from resources/public/ rather than resources/ because you may want to have resources/secrets.txt without anybody being able to access it.