adds css classes to voted options in debates

for logged users.
Closes #88

app/controllers/debates_controller.rb

@@ -7,13 +7,16 @@ class DebatesController < ApplicationController
   def index
     if params[:tag]
       @debates = Debate.tagged_with(params[:tag]).order("created_at DESC")
+      set_voted_values @debates.map(&:id)
     else
       @debates = Debate.all.order("created_at DESC")
+      set_voted_values @debates.map(&:id)
       @featured_debates = @debates.to_a.shift(3)
     end
   end
 
   def show
+    set_voted_values [@debate.id]
   end
 
   def new
@@ -40,6 +43,7 @@ class DebatesController < ApplicationController
 
   def vote
     @debate.vote_by(voter: current_user, vote: params[:value])
+    set_voted_values [@debate.id]
   end
 
 
@@ -55,4 +59,8 @@ class DebatesController < ApplicationController
     def validate_ownership
       raise ActiveRecord::RecordNotFound unless @debate.editable_by?(current_user)
     end
+
+    def set_voted_values(debates_ids)
+      @voted_values = current_user ? current_user.votes_on_debates(debates_ids) : {}
+    end
 end