class ResetCounterCache < ActiveRecord::Migration def self.up Forum.find(:all).each do | forum | forum.topics_count=forum.topics.count forum.posts_count=forum.posts.count forum.save end Post.find(:all).each do | i | i.posts_count=i.posts.count i.save end User.find(:all).each do | i | i.posts_count=i.posts.count i.save end end def self.down end end