Change Helper Like Method to use ControllerMethod

app/helpers/learning_objects_helper.rb

 module LearningObjectsHelper
   def create_like lo
-    Portalmec::Application.repository.for(:learning_object).create_edge "Likes", "#14:0", lo.id
+    Portalmec::Application.repository.for(:learning_object).like lo, current_user
   end
 end