Force distinct to recommendations methods. Sort by recommendations on home carousel.

app/controllers/welcome_controller.rb

@@ -17,8 +17,8 @@ class WelcomeController < ApplicationController
   private
 
   def set_user_recommendations
-    @recommended_debates = Debate.recommendations(current_user).limit(3)
-    @recommended_proposals = Proposal.recommendations(current_user).limit(3)
+    @recommended_debates = Debate.recommendations(current_user).sort_by_recommendations.limit(3)
+    @recommended_proposals = Proposal.recommendations(current_user).sort_by_recommendations.limit(3)
   end
 
 end

app/models/debate.rb

@@ -54,7 +54,7 @@ class Debate < ActiveRecord::Base
       debates_list = debates_list_with_tagged
     end
 
-    debates_list
+    debates_list.uniq
   end
 
   def searchable_values

app/models/proposal.rb

@@ -65,7 +65,7 @@ class Proposal < ActiveRecord::Base
       proposals_list = self.proposals_not_followed_by_user(user, proposals_list_with_tagged)
     end
 
-    proposals_list
+    proposals_list.uniq
   end
 
   def self.proposals_with_tagged(user, proposals_list)