Fix page hits count

vendor/impressionist/app/models/impressionist/impressionable.rb

@@ -42,6 +42,8 @@ module Impressionist
       # column_name = cache_options[:column_name].to_sym
       # count = cache_options[:unique] ? impressionist_count(:filter => :ip_address) : impressionist_count
       # update_attribute(column_name, count)
+      cache_options = self.class.impressionist_counter_cache_options
+      column_name = cache_options[:column_name].to_sym
       update_attribute(column_name, self.send(cache_options[:column_name]) + 1)
     end