Add a not found page

uitwww/__init__.py

@@ -33,6 +33,10 @@ def create_app(data_path):
     app.register_blueprint(pages.prepare_blueprint(app))
     pages.prepare_navbar(app)
 
+    @app.errorhandler(404)
+    def not_found(error):
+        return flask.render_template("404.html")
+
     return app
 
 

uitwww/templates/404.html

+{# Source code of the Ubuntu-it website
+ # Copyright (C) 2016  Pietro Albini        <pietroalbini@ubuntu.com>
+ #
+ # This program is free software: you can redistribute it and/or modify
+ # it under the terms of the GNU Affero General Public License as published
+ # by the Free Software Foundation, either version 3 of the License, or
+ # (at your option) any later version.
+ #
+ # This program is distributed in the hope that it will be useful,
+ # but WITHOUT ANY WARRANTY; witout even the implied warranty of
+ # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ # GNU Affero General Public License for more details.
+ #
+ # You should have received a copy of the GNU Affero General Public License
+ # along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ #}
+
+{% extends "layout.html" %}
+
+{% block title %} Pagina non trovata {% endblock %}
+
+{% block content %}
+    <div class="row row-hero">
+        <div class="twelve-col">
+            <h2>Questa pagina non esiste</h2>
+            <p>
+                Beh, ovviamente <i>questa</i> pagina esiste. Ma la pagina che hai
+                richiesto non esiste. Infatti, questa pagina è qui solo per dirti
+                che la pagina che stai cercando non esiste.
+            </p>
+            <p>
+                Se questa pagina esisteva in passato e non la trovi più
+                <a href="http://forum.ubuntu-it.org/viewforum.php?f=45&sid=855a03444972c626fb2d486b42d05469">
+                    segnalacelo
+                </a> che provvederemo a sistemare il prima possibile!
+            </p>
+        </div>
+    </div>
+{% endblock %}