require 'bare_migration' class FixupForthcomingPublications < ActiveRecord::Migration class Trigger < ActiveRecord::Base belongs_to :pending_items, :polymorphic => true end class Content < ActiveRecord::Base end class Article < Content end def self.up return if $schema_generator Article.transaction do Trigger.transaction do Article.find(:all, :conditions => ['published = ? AND published_at > ?', true, Time.now]).each do |art| Trigger.create!(:pending_item => art, :due_at => art.published_at, :trigger_method => 'publish!') art.update_attribute(:published, false) end end end end def self.down return if $schema_generator Article.transaction do Trigger.transaction do Trigger.find(:all, :conditions => "pending_item_type = 'Article' AND trigger_method = 'publish!'").each do |t| t.pending_item.update_attribute(:published, :true) t.destroy end end end end end