Extended url_for to handle specifying which router should be used.

A few examples:
url_for Blog::Engine, :posts_path
url_for Blog::Engine, @post
url_for Blog::Engine, :action => "main", :controller => "index"

2 files changed, 53 insertions, 0 deletions

diff --git a/actionpack/test/dispatch/url_for_test.rb b/actionpack/test/dispatch/url_for_test.rb
new file mode 100644
index 0000000000..3dc96d27d7
--- /dev/null
+++ b/actionpack/test/dispatch/url_for_test.rb
@@ -0,0 +1,52 @@
+require 'abstract_unit'
+
+module UrlForGeneration
+  class UrlForTest < ActionDispatch::IntegrationTest
+
+    Routes = ActionDispatch::Routing::RouteSet.new
+    Routes.draw { match "/foo", :to => "my_route_generating#index", :as => :foo }
+
+    class BlogEngine
+      def self.routes
+        @routes ||= begin
+          routes = ActionDispatch::Routing::RouteSet.new
+          routes.draw do
+            resources :posts
+          end
+          routes
+        end
+      end
+    end
+
+    class Post
+      extend ActiveModel::Naming
+
+      def to_param
+        "1"
+      end
+
+      def self.model_name
+        klass = "Post"
+        def klass.name; self end
+
+        ActiveModel::Name.new(klass)
+      end
+    end
+
+    include Routes.url_helpers
+
+    test "url_for with named url helpers" do
+      assert_equal "/posts", url_for(BlogEngine, :posts_path)
+    end
+
+    test "url_for with polymorphic routes" do
+      assert_equal "http://www.example.com/posts/1", url_for(BlogEngine, Post.new)
+    end
+
+    test "url_for with named url helper with arguments" do
+      assert_equal "/posts/1", url_for(BlogEngine, :post_path, 1)
+      assert_equal "/posts/1", url_for(BlogEngine, :post_path, :id => 1)
+      assert_equal "/posts/1.json", url_for(BlogEngine, :post_path, :id => 1, :format => :json)
+    end
+  end
+end
diff --git a/actionpack/test/dispatch/url_generation_test.rb b/actionpack/test/dispatch/url_generation_test.rb
index d491be2f11..2b54bc62b0 100644
--- a/actionpack/test/dispatch/url_generation_test.rb
+++ b/actionpack/test/dispatch/url_generation_test.rb
@@ -41,3 +41,4 @@ module TestUrlGeneration
     end
   end
 end
+