adding a direct dispatch method to controller classes

This saves a lambda and request allocation on each request.

2 files changed, 11 insertions, 1 deletions

diff --git a/actionpack/lib/action_controller/metal.rb b/actionpack/lib/action_controller/metal.rb
index d68fa16847..54980aa453 100644
--- a/actionpack/lib/action_controller/metal.rb
+++ b/actionpack/lib/action_controller/metal.rb
@@ -259,5 +259,15 @@ module ActionController
         lambda { |env| new.dispatch(name, ActionDispatch::Request.new(env)) }
       end
     end
+
+    # Direct dispatch to the controller.  Instantiates the controller, then
+    # executes the action named +name+.
+    def self.dispatch(name, req)
+      if middleware_stack.any?
+        middleware_stack.build(name) { |env| new.dispatch(name, req) }.call req.env
+      else
+        new.dispatch(name, req)
+      end
+    end
   end
 end
diff --git a/actionpack/lib/action_dispatch/routing/route_set.rb b/actionpack/lib/action_dispatch/routing/route_set.rb
index c026d0e2d9..3e3a424df3 100644
--- a/actionpack/lib/action_dispatch/routing/route_set.rb
+++ b/actionpack/lib/action_dispatch/routing/route_set.rb
@@ -44,7 +44,7 @@ module ActionDispatch
         end
 
         def dispatch(controller, action, req)
-          controller.action(action).call(req.env)
+          controller.dispatch(action, req)
         end
       end