export_seeds.rake

namespace :db do
  desc "Convert your database into seeds!"
  task :export_seeds => :environment do
    Rails.application.eager_load!
    models = ObjectSpace.each_object(Class).select { |c| c < ActiveRecord::Base }
 
    ignored_keys = %w[created_at updated_at id]
 
    models.each do |model|
      puts "### #{model}s ######################################"
      puts
      model.all.each do |record|
        fields = record.attributes.delete_if { |k,v| ignored_keys.include? k }
        puts "#{model.name}.create(#{fields.inspect})"
      end
      puts
    end
  end
end