404 handling

app/assets/javascripts/exceptions.js.coffee

@@ -0,0 +1,3 @@
+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://jashkenas.github.com/coffee-script/

app/assets/stylesheets/exceptions.css.scss

@@ -0,0 +1,3 @@
+// Place all the styles related to the exceptions controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/

app/controllers/application_controller.rb

@@ -1,3 +1,7 @@
+class NotFound < StandardError; end
+
 class ApplicationController < ActionController::Base
   protect_from_forgery
+  rescue_from(NotFound) { render 'exceptions/not_found' }
+
 end

app/controllers/exceptions_controller.rb

@@ -0,0 +1,10 @@
+class ExceptionsController < ApplicationController
+
+  def not_found
+    respond_to do |format|
+      format.any { render :text => 'Requested resource not found', :status => 404 }
+      format.html { render :status => 404 }
+    end
+  end
+
+end

app/helpers/exceptions_helper.rb

@@ -0,0 +1,2 @@
+module ExceptionsHelper
+end

app/views/exceptions/not_found.html.erb

@@ -0,0 +1 @@
+404 dude

config/routes.rb

@@ -55,4 +55,6 @@ AsciiIo::Application.routes.draw do
   # This is a legacy wild controller route that's not recommended for RESTful applications.
   # Note: This route will make all actions in every controller accessible via GET requests.
   # match ':controller(/:action(/:id(.:format)))'
+
+  match "*a", :to => "exceptions#not_found"
 end

spec/controllers/exceptions_controller_spec.rb

@@ -0,0 +1,5 @@
+require 'spec_helper'
+
+describe ExceptionsController do
+
+end

spec/helpers/exceptions_helper_spec.rb

@@ -0,0 +1,15 @@
+require 'spec_helper'
+
+# Specs in this file have access to a helper object that includes
+# the ExceptionsHelper. For example:
+#
+# describe ExceptionsHelper do
+#   describe "string concat" do
+#     it "concats two strings with spaces" do
+#       helper.concat_strings("this","that").should == "this that"
+#     end
+#   end
+# end
+describe ExceptionsHelper do
+  pending "add some examples to (or delete) #{__FILE__}"
+end