Migrate all environments

db_migrate_all.rake

namespace :db do
  desc "Migrate all enviroments"
  namespace :migrate do
    task :all do
      #current_rails_env = Rails.env
      db_config = YAML::load(File.read(File.join(Rails.root, "/config/database.yml")))
      db_config.keys.each do |e|
        #Rails.env = e
        #Rake::Task['db:migrate'].invoke
        puts "migrating: #{e}"
        system("rake db:migrate RAILS_ENV=#{e}")
        puts "-------------"
      end
      #Rails.env = current_rails_env
    end
  end
end