# This migration comes from acts_as_taggable_on_engine (originally 3) class AddTaggingsCounterCacheToTags < ActiveRecord::Migration def self.up add_column :tags, :taggings_count, :integer, default: 0 ActsAsTaggableOn::Tag.reset_column_information ActsAsTaggableOn::Tag.find_each do |tag| ActsAsTaggableOn::Tag.reset_counters(tag.id, :taggings) end end def self.down remove_column :tags, :taggings_count end end