initialize_temporary_directories

# File railties/lib/initializer.rb, line 260
    def initialize_temporary_directories
      if configuration.frameworks.include?(:action_controller)
        session_path = "#{RAILS_ROOT}/tmp/sessions/"
        ActionController::Base.session_options[:tmpdir] = File.exist?(session_path) ? session_path : Dir::tmpdir
        
        cache_path = "#{RAILS_ROOT}/tmp/cache/"
        if File.exist?(cache_path)
          ActionController::Base.fragment_cache_store = :file_store, cache_path
        end
      end
    end