2 files changed, 6 insertions, 2 deletions
diff --git a/actionpack/lib/action_dispatch/journey/path/pattern.rb b/actionpack/lib/action_dispatch/journey/path/pattern.rb
index fb155e516f..28c75618de 100644
--- a/actionpack/lib/action_dispatch/journey/path/pattern.rb
+++ b/actionpack/lib/action_dispatch/journey/path/pattern.rb
@@ -28,6 +28,11 @@ module ActionDispatch
           @required_names = nil
           @re             = nil
           @offsets        = nil
+          @format         = Visitors::FormatBuilder.new.accept(spec)
+        end
+
+        def format_path(path_options)
+          @format.evaluate path_options
         end
 
         def ast
diff --git a/actionpack/lib/action_dispatch/journey/route.rb b/actionpack/lib/action_dispatch/journey/route.rb
index 7535a62740..d4df96314f 100644
--- a/actionpack/lib/action_dispatch/journey/route.rb
+++ b/actionpack/lib/action_dispatch/journey/route.rb
@@ -76,8 +76,7 @@ module ActionDispatch
           value.to_s == defaults[key].to_s && !required_parts.include?(key)
         end
 
-        format = Visitors::FormatBuilder.new.accept(path.spec)
-        format.evaluate path_options
+        path.format_path path_options
       end
 
       def optimized_path