diff --git a/lib/ext/article.rb b/lib/ext/article.rb
new file mode 100644
index 0000000..42af826
--- /dev/null
+++ b/lib/ext/article.rb
@@ -0,0 +1,9 @@
+require_dependency 'article'
+
+class Article
+
+  def ranking_position
+    self.kind_of?(ProposalsDiscussionPlugin::Proposal) && self.ranking_item.present? ? self.ranking_item.position : nil
+  end
+
+end
diff --git a/lib/ext/entities.rb b/lib/ext/entities.rb
index 502a353..4d6cfca 100644
--- a/lib/ext/entities.rb
+++ b/lib/ext/entities.rb
@@ -1,7 +1,13 @@
+require File.join(Rails.root,'lib','noosfero','api','entities')
 module Noosfero
   module API
     module Entities
 
+      #FIXME make test
+      class Person < Profile
+        expose :ranking_position
+      end
+
       def self.included(base)
         base.extend(ClassMethods)
       end
--
libgit2 0.21.2