Added error checking for invalid postcodes and postcodes outside Sutton borough

app.rb

@@ -25,10 +25,18 @@ get '/wards' do
   # Postcode not found/invalid
   # Postcode valid but not in LB Sutton
  
-  unless result = Pat.get(@postcode)
+  result = Pat.get(@postcode)
+
+  if result.code == 404
     redirect '/error'
   end
+
   @district_name = result['administrative']['district']['title']
+  
+  if @district_name != "Sutton London Borough Council"
+    redirect '/aliens'
+  end
+  
   @ward_name = result['administrative']['ward']['title']
   @ward = Ward.first( { :name => @ward_name } )
   @council_candidates = Councilcandidate.all( :ward_id => @ward.id, :order => [ 'surname' ])
@@ -55,3 +63,7 @@ end
 get '/about' do
   haml :about
 end
+
+get '/aliens' do
+  haml :aliens
+end

views/_register-to-vote.haml

@@ -9,4 +9,4 @@
   You can get a registration form at the 
   %a{ :href => "http://www.aboutmyvote.co.uk/" } About My Vote 
   website or by phoning Sutton Council on 
-  %span{ :class => 'phone' } 020 8770 4888.
+  %span.phone 020 8770 4888.

views/aliens.haml

@@ -0,0 +1,6 @@
+.grid_12
+  %h1 You're not from round these parts…
+  
+  %p This site only has information about elections in the London Borough of Sutton.
+  
+  %p Your postcode is outside Sutton. Sorry, we can't help you further.

views/error.haml

@@ -1,5 +1,4 @@
-%h1 Not Found
-
-%p That's an invalid postcode or one that's not in the London Borough of Sutton.
-
-%p Sorry, we can't help you further.
+.grid_12
+  %h1 Invalid postcode  
+  %p
+    %a{ :href => "/" }Please go back and try again