error page in production

app.rb

@@ -101,6 +101,16 @@ def page_title title = nil
   erb :not_found
 end
 
+error do
+  err = env['sinatra.error']
+  locals = {}
+  if err.respond_to? :message
+    locals[:error_type]    = err.class.name
+    locals[:error_message] = err.message
+  end
+  erb :error, {}, locals
+end
+
 get "/" do
   cache_control :public
   last_modified File.mtime('views/index.erb')

views/error.erb

@@ -0,0 +1,18 @@
+<div id=error class=container>
+
+  <div class="hero-unit page-header">
+    <h1>BOOM! Something exploded.</h1>
+    <% if defined? error_type %>
+    <p>
+      The error message was:<br>
+      <strong><%== error_type %>:</strong>
+      <%== error_message %>
+    </p>
+    <% end %>
+    <p>
+      Please <a href="https://github.com/mislav/rfc/issues">report bugs here</a>.
+    </p>
+    <nav><a href="<%= home_path %>">&larr; Home</a></nav>
+  </div>
+
+</div>