use Proc.new to automatically do parameter checking for us

rails · May 23, 2014 · 93ae747 · 93ae747
1 parent 7c26f01
commit 93ae747
Showing 1 changed file with 1 addition and 3 deletions.
diff --git a/actionpack/lib/action_controller/metal.rb b/actionpack/lib/action_controller/metal.rb
@@ -30,10 +30,8 @@ def valid?(action)
       end
     end
 
-    def build(action, app=nil, &block)
-      app  ||= block
+    def build(action, app = Proc.new)
       action = action.to_s
-      raise "MiddlewareStack#build requires an app" unless app
 
       middlewares.reverse.inject(app) do |a, middleware|
         middleware.valid?(action) ? middleware.build(a) : a