semipermeable

# db/migrate/20110714024435_split_author.rb
class SplitAuthor < ActiveRecord::Migration
  def self.up
    Post.where(:author=>nil).each do |p|
      author = Author.create!(:name => p.author_name,
                              :account_id => p.account_id)
      p.author = author
      p.save!
    end
  end