How to define example group run order in RSpec 2

spec_helper.rb

# This file is copied to spec/ when you run 'rails generate rspec:install'
ENV["RAILS_ENV"] ||= 'test'
require File.expand_path("../../config/environment", __FILE__)
require 'rspec/rails'
require 'rspec/autorun'

# Requires supporting ruby files with custom matchers and macros, etc,
# in spec/support/ and its subdirectories.
Dir[Rails.root.join("spec/support/**/*.rb")].each {|f| require f}

RSpec.configure do |config|

  # == Sort examples groups before running them.
  # The example groups will run in the following order:
  # 1. model 2. controller 3. helper 4. view 5. request 6. "others" 7. capybara_feature 8. js
  config.before(:suite) do 
    RSpec::world.example_groups.sort_by! do |example_group|
      metadata = example_group.metadata
      if metadata[:js]
        8
      elsif metadata[:capybara_feature]
        7
      else
        type_order = %w(model controller helper view request)
        type_order.find_index(metadata[:type].to_s) || 6
      end
    end
  end

  # == Mock Framework
  #
  # If you prefer to use mocha, flexmock or RR, uncomment the appropriate line:
  #
  # config.mock_with :mocha
  # config.mock_with :flexmock
  # config.mock_with :rr
  config.mock_with :rspec

  # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
  config.fixture_path = "#{::Rails.root}/spec/fixtures"

  # If you're not using ActiveRecord, or you'd prefer not to run each of your
  # examples within a transaction, remove the following line or assign false
  # instead of true.
  config.use_transactional_fixtures = true

  # If true, the base class of anonymous controllers will be inferred
  # automatically. This will be the default behavior in future versions of
  # rspec-rails.
  config.infer_base_class_for_anonymous_controllers = false
end