1 files changed, 49 insertions, 0 deletions
diff --git a/actionpack/lib/action_controller/base/url_for.rb b/actionpack/lib/action_controller/base/url_for.rb
new file mode 100644
index 0000000000..7119c14cd3
--- /dev/null
+++ b/actionpack/lib/action_controller/base/url_for.rb
@@ -0,0 +1,49 @@
+module ActionController
+  module UrlFor
+    extend ActiveSupport::Concern
+
+    include RackConvenience
+
+    def process_action(*)
+      initialize_current_url
+      super
+    end
+
+    def initialize_current_url
+      @url = UrlRewriter.new(request, params.clone)
+    end
+
+    # Overwrite to implement a number of default options that all url_for-based methods will use. The default options should come in
+    # the form of a hash, just like the one you would use for url_for directly. Example:
+    #
+    #   def default_url_options(options)
+    #     { :project => @project.active? ? @project.url_name : "unknown" }
+    #   end
+    #
+    # As you can infer from the example, this is mostly useful for situations where you want to centralize dynamic decisions about the
+    # urls as they stem from the business domain. Please note that any individual url_for call can always override the defaults set
+    # by this method.
+    def default_url_options(options = nil)
+    end
+
+    def rewrite_options(options) #:nodoc:
+      if defaults = default_url_options(options)
+        defaults.merge(options)
+      else
+        options
+      end
+    end
+
+    def url_for(options = {})
+      options ||= {}
+      case options
+        when String
+          options
+        when Hash
+          @url.rewrite(rewrite_options(options))
+        else
+          polymorphic_url(options)
+      end
+    end
+  end
+end