Cleaned up route optimisation guard condition generation code as it was getting a little messy.

Add additional condition to handle the case where default_url_options is only defined in the controller, not the view.

Signed-off-by: Michael Koziarski <michael@koziarski.com>

actionpack/lib/action_controller/routing/optimisations.rb

@@ -20,14 +20,20 @@ module ActionController
 
       class Optimiser
         attr_reader :route, :kind
+        GLOBAL_GUARD_CONDITIONS = [
+          "(!defined?(default_url_options) || default_url_options.blank?)",
+          "(!defined?(controller.default_url_options) || controller.default_url_options.blank?)",
+          "defined?(request)",
+          "request"
+          ]
 
         def initialize(route, kind)
           @route = route
           @kind  = kind
         end
 
-        def guard_condition
-          'false'
+        def guard_conditions
+          ["false"]
         end
 
         def generation_code
@@ -36,6 +42,7 @@ module ActionController
 
         def source_code
           if applicable?
+            guard_condition = (GLOBAL_GUARD_CONDITIONS + guard_conditions).join(" && ")
             "return #{generation_code} if #{guard_condition}\n"
           else
             "\n"
@@ -57,14 +64,14 @@ module ActionController
       # return a string like "/people/#{@person.to_param}"
       # rather than triggering the expensive logic in +url_for+.
       class PositionalArguments < Optimiser
-        def guard_condition
+        def guard_conditions
           number_of_arguments = route.segment_keys.size
           # if they're using foo_url(:id=>2) it's one
           # argument, but we don't want to generate /foos/id2
           if number_of_arguments == 1
-            "(!defined?(default_url_options) || default_url_options.blank?) && defined?(request) && request && args.size == 1 && !args.first.is_a?(Hash)"
+            ["args.size == 1", "!args.first.is_a?(Hash)"]
           else
-            "(!defined?(default_url_options) || default_url_options.blank?) && defined?(request) && request && args.size == #{number_of_arguments}"
+            ["args.size == #{number_of_arguments}"]
           end
         end
 
@@ -98,8 +105,13 @@ module ActionController
       # above, but it supports additional query parameters as the last
       # argument
       class PositionalArgumentsWithAdditionalParams < PositionalArguments
-        def guard_condition
-          "(!defined?(default_url_options) || default_url_options.blank?) && defined?(request) && request && args.size == #{route.segment_keys.size + 1} && !args.last.has_key?(:anchor) && !args.last.has_key?(:port) && !args.last.has_key?(:host)"
+        def guard_conditions
+          [
+            "args.size == #{route.segment_keys.size + 1}",
+            "!args.last.has_key?(:anchor)",
+            "!args.last.has_key?(:port)",
+            "!args.last.has_key?(:host)"
+          ]
         end
 
         # This case uses almost the same code as positional arguments,

actionpack/test/template/url_helper_test.rb

@@ -376,6 +376,19 @@ class UrlHelperWithControllerTest < ActionView::TestCase
     assert_equal '/url_helper_with_controller/nil_url_for', @response.body
   end
 
+  def test_named_route_should_show_host_and_path_using_controller_default_url_options
+    class << @controller
+      def default_url_options(options = nil)
+        {:host => 'testtwo.host'}
+      end
+    end
+
+    with_url_helper_routing do
+      get :show_named_route, :kind => 'url'
+      assert_equal 'http://testtwo.host/url_helper_with_controller/show_named_route', @response.body
+    end
+  end
+
   protected
     def with_url_helper_routing
       with_routing do |set|