Add Like count to LearningObject's show page

app/controllers/learning_objects_controller.rb

@@ -4,6 +4,9 @@ class LearningObjectsController < ApplicationController
 
   def show
     @object = repository.for(:object).get_by_dspaceid params[:id]
+    unless @object.nil?
+      @like_counts = repository.for(:edge).get_in_edges_count "ELike", @object.first["@rid"]
+    end
   end
 
   def new

app/repositories/orient_db/edge_repository.rb

 module OrientDb
   class EdgeRepository < Base
 
+    def get_in_edges_count(edge_class, id)
+      OrientDb::Client.instance.query "SELECT COUNT(@rid) FROM #{edge_class} WHERE in = #{id}"
+    end
+
     def create_like_edge(from_id, to_id)
       OrientDb::Client.instance.command "CREATE EDGE ELike FROM #{from_id} TO #{to_id}"
     end

app/views/learning_objects/show.html.erb

@@ -17,4 +17,5 @@
     { action: "create", controller: "graph_tests" },
     method: :post,
     params: { from_id: " #14:0", to_id: get_object_property(@object,"@rid") }
-) %>
+)%>
+Total Curtir: <%= get_object_property(@like_counts,"COUNT") %>