Rake task to dump current Rails database into seeds.rb format

database2seeds.rb

namespace :export do
  desc "Prints Country.all in a seeds.rb way."
  task :seeds_format => :environment do
    Country.order(:id).all.each do |country|
      puts "Country.create(#{country.serializable_hash.delete_if {|key, value| ['created_at','updated_at','id'].include?(key)}.to_s.gsub(/[{}]/,'')})"
    end
  end
end

#via http://xyzpub.com/en/ruby-on-rails/3.2/seed_rb.html