Search sold edition,rake sunspot:solr:run. NewsBulletin.solr_search,NewsBulletin.solr_reindex. Not working

app/models/sunspot/mongoid.rb

@@ -0,0 +1,46 @@
+# coding: utf-8
+# this is from : https://github.com/jugyo/sunspot_mongoid
+# this file is special for mongoid_auto_increment_id
+require 'sunspot'
+require 'mongoid'
+require 'sunspot/rails'
+
+# == Examples:
+#
+# class Post
+#   include Mongoid::Document
+#   field :title
+#
+#   include Sunspot::Mongoid
+#   searchable do
+#     text :title
+#   end
+# end
+#
+module Sunspot
+  module Mongoid
+    def self.included(base)
+      base.class_eval do
+        extend Sunspot::Rails::Searchable::ActsAsMethods
+        Sunspot::Adapters::DataAccessor.register(DataAccessor, base)
+        Sunspot::Adapters::InstanceAdapter.register(InstanceAdapter, base)
+      end
+    end
+
+    class InstanceAdapter < Sunspot::Adapters::InstanceAdapter
+      def id
+        @instance.id
+      end
+    end
+
+    class DataAccessor < Sunspot::Adapters::DataAccessor
+      def load(id)
+        @clazz.where(:_id => id).first
+      end
+
+      def load_all(ids)
+        @clazz.where(:_id.in => ids.collect { |id| id.to_i })
+      end
+    end
+  end
+end