Clear the filters when the routes get cleared so we don't end up with…

… multiple filters (in particular in development mode when the routes get cleared every request)

Signed-off-by: Sven Fuchs <svenfuchs@artweb-design.de>

lib/routing_filter.rb

@@ -37,6 +37,13 @@ def generate_optimisation_block_with_filtering(*args)
 end
 
 ActionController::Routing::RouteSet.class_eval do
+  def clear_with_filtering!
+    returning clear_without_filtering! do
+      @filters.clear if @filters
+    end
+  end
+  alias_method_chain :clear!, :filtering
+
   def filters
     @filters ||= RoutingFilter::Chain.new
   end
@@ -66,4 +73,4 @@ def extract_request_environment(request)
                  :subdomain => request.subdomains.first
     end
   end
-end
+end