disable caching to disable the back button when the user logs out (fo…

…rce reload)

app/controllers/application_controller.rb

@@ -22,6 +22,7 @@ class ApplicationController < ActionController::Base
   before_filter :validate, :except => [:login, :authenticate, :logout]
   before_filter :prepare_menu
   before_filter :set_locale
+  before_filter :set_cache_headers
 
 
 protected
@@ -82,4 +83,10 @@ def prepare_menu
     end
   end
 
+  def set_cache_headers
+    response.headers["Cache-Control"] = "no-cache, no-store, max-age=0, must-revalidate"
+    response.headers["Pragma"] = "no-cache"
+    response.headers["Expires"] = "Fri, 01 Jan 1990 00:00:00 GMT"
+  end
+
 end