2 model methods for unique impression account - based on unique ip_address & request_hash

app/models/impressionist/impressionable.rb

@@ -15,6 +15,10 @@ module Impressionist
       end
 
       def unique_impression_count(start_date=nil,end_date=Time.now)
+        start_date.blank? ? impressions.group(:request_hash).all.size : impressions.where("created_at>=? and created_at<=?",start_date,end_date).group(:request_hash).all.size
+      end
+      
+      def unique_impression_count_ip(start_date=nil,end_date=nil)
         start_date.blank? ? impressions.group(:ip_address).all.size : impressions.where("created_at>=? and created_at<=?",start_date,end_date).group(:ip_address).all.size
       end
     end