Fixed default routing NoMethodError downcase for nil when default con…

…troller provided (closes #5400) [kajism@yahoo.com]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4998 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/lib/action_controller/routing.rb

@@ -556,8 +556,11 @@ def extract_value
       end
 
       def match_extraction(next_capture)
-        hangon = (default ? "|| #{default.inspect}" : "if match[#{next_capture}]")
-        "params[:#{key}] = match[#{next_capture}].downcase #{hangon}"
+        if default
+          "params[:#{key}] = match[#{next_capture}] ? match[#{next_capture}].downcase : '#{default}'"
+        else
+          "params[:#{key}] = match[#{next_capture}].downcase if match[#{next_capture}]"
+        end
       end
     end
 

actionpack/test/controller/routing_test.rb

@@ -1286,6 +1286,15 @@ def test_draw_default_route
     end
   end
 
+  def test_draw_default_route_with_default_controller
+    ActionController::Routing.with_controllers(['users']) do
+      set.draw do |map|
+        map.connect '/:controller/:action/:id', :controller => 'users'
+      end      
+      assert_equal({:controller => 'users', :action => 'index'}, set.recognize_path('/'))
+    end
+  end
+
   def test_route_with_parameter_shell
     ActionController::Routing.with_controllers(['users', 'pages']) do
       set.draw do |map|