login fix

app/controllers/application_controller.rb

@@ -19,9 +19,24 @@
     if request.referer == sign_in_url
       super
     else
-      stored_location_for(resource) || request.referer || root_path
+      stored_location_for(resource) || root_path
     end
-  end^
+  end
+  rescue_from CanCan::AccessDenied do |exception|
+    
+    if user_signed_in?
+      flash[:error] = "Not authorized to view this page"
+      session[:user_return_to] = nil
+      redirect_to root_url
+
+    else              
+      flash[:error] = "You must first login to view this page"
+      session[:user_return_to] = request.url
+      redirect_to "/users/sign_in"
+    end 
+    
+  end 
+  
 def get_theme
   if ThemesForRails.available_theme_names.include?(params[:theme])
   params[:theme]