From 8f863742e34908ed1a9549bb9f984edb58f2b068 Mon Sep 17 00:00:00 2001
From: Diego Carrion <dc.rec1@gmail.com>
Date: Mon, 10 Oct 2011 19:53:42 -0300
Subject: allow shorthand routes with nested optional parameters

---
 actionpack/lib/action_dispatch/routing/mapper.rb |  6 +++---
 actionpack/test/dispatch/routing_test.rb         | 11 +++++++++++
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/actionpack/lib/action_dispatch/routing/mapper.rb b/actionpack/lib/action_dispatch/routing/mapper.rb
index cd59b13c42..ef31d1e004 100644
--- a/actionpack/lib/action_dispatch/routing/mapper.rb
+++ b/actionpack/lib/action_dispatch/routing/mapper.rb
@@ -49,7 +49,7 @@ module ActionDispatch
       class Mapping #:nodoc:
         IGNORE_OPTIONS = [:to, :as, :via, :on, :constraints, :defaults, :only, :except, :anchor, :shallow, :shallow_path, :shallow_prefix]
         ANCHOR_CHARACTERS_REGEX = %r{\A(\\A|\^)|(\\Z|\\z|\$)\Z}
-        SHORTHAND_REGEX = %r{^/[\w/]+$}
+        SHORTHAND_REGEX = %r{/[\w/]+$}
         WILDCARD_PATH = %r{\*([^/\)]+)\)?$}
 
         def initialize(set, scope, path, options)
@@ -70,7 +70,7 @@ module ActionDispatch
 
             if using_match_shorthand?(path_without_format, @options)
               to_shorthand    = @options[:to].blank?
-              @options[:to] ||= path_without_format[1..-1].sub(%r{/([^/]*)$}, '#\1')
+              @options[:to] ||= path_without_format.gsub(/\(.*\)/, "")[1..-1].sub(%r{/([^/]*)$}, '#\1')
             end
 
             @options.merge!(default_controller_and_action(to_shorthand))
@@ -90,7 +90,7 @@ module ActionDispatch
 
           # match "account/overview"
           def using_match_shorthand?(path, options)
-            path && options.except(:via, :anchor, :to, :as).empty? && path =~ SHORTHAND_REGEX
+            path && (options[:to] || options[:action]).nil? && path =~ SHORTHAND_REGEX
           end
 
           def normalize_path(path)
diff --git a/actionpack/test/dispatch/routing_test.rb b/actionpack/test/dispatch/routing_test.rb
index c0b74bc9f9..a71ac1bdc1 100644
--- a/actionpack/test/dispatch/routing_test.rb
+++ b/actionpack/test/dispatch/routing_test.rb
@@ -339,6 +339,7 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
       end
 
       scope '(:locale)', :locale => /en|pl/ do
+        get "registrations/new"
         resources :descriptions
         root :to => 'projects#index'
       end
@@ -1471,6 +1472,16 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
     end
   end
 
+  def test_nested_optional_path_shorthand
+    with_test_routes do
+      get '/registrations/new'
+      assert @request.params[:locale].nil?
+
+      get '/en/registrations/new'
+      assert 'en', @request.params[:locale]
+    end
+  end
+
   def test_default_params
     with_test_routes do
       get '/inline_pages'
-- 
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