board迁移

lib/tasks/public_message.rake

@@ -118,4 +118,19 @@ namespace :sync do
       large_time
     end
   end
+
+  task :board_count => :environment do
+    Course.find_each do |course|
+      puts course.id
+
+      begin
+        messages_count = Message.find_by_sql("select count(*) as count from messages where board_id in (select id from boards where course_id=#{course.id})").first.try(:count)
+
+        Board.update_column(messages_count: messages_count)
+      rescue
+
+      end
+
+    end
+  end
 end