lib/popcorn: introduce mongodb example

Signed-off-by: Alexandre Terrasa <alexandre@moz-code.org>

diff --git a/lib/popcorn/examples/mongodb/example_mongodb.nit b/lib/popcorn/examples/mongodb/example_mongodb.nit
new file mode 100644 (file)
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+++ b/lib/popcorn/examples/mongodb/example_mongodb.nit
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+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Copyright 2014-2015 Alexandre Terrasa <alexandre@moz-code.org>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import popcorn
+import mongodb
+import template
+
+class UserList
+       super Handler
+
+       var db: MongoDb
+
+       redef fun get(req, res) do
+               var users = db.collection("users").find_all(new JsonObject)
+
+               var tpl = new Template
+               tpl.add """
+               <h1>Users</h1>
+
+               <h2>Add a new user</h2>
+               <form action="/" method="POST">
+                       <input type="text" name="login" />
+                       <input type="password" name="password" />
+                       <input type="submit" value="save" />
+               </form>
+
+               <h2>All users</h2>
+               <table>"""
+               for user in users do
+                       tpl.add """<tr>
+                       <td>{{{user["login"] or else "null"}}}</td>
+                       <td>{{{user["password"] or else "null"}}}</td>
+                       </tr>"""
+               end
+               tpl.add "</table>"
+               res.html(tpl)
+       end
+
+       redef fun post(req, res) do
+               var json = new JsonObject
+               json["login"] = req.post_args["login"]
+               json["password"] = req.post_args["password"]
+               db.collection("users").insert(json)
+               res.redirect("/")
+       end
+end
+
+var mongo = new MongoClient("mongodb://localhost:27017/")
+var db = mongo.database("mongo_example")
+
+var app = new App
+app.use("/", new UserList(db))
+app.listen("localhost", 3000)