instance method dispatch

# File actionpack/lib/action_controller/dispatcher.rb, line 84
    def dispatch
      begin
        run_callbacks :before_dispatch
        Routing::Routes.call(@env)
      rescue Exception => exception
        if controller ||= (::ApplicationController rescue Base)
          controller.call_with_exception(@env, exception).to_a
        else
          raise exception
        end
      ensure
        run_callbacks :after_dispatch, :enumerator => :reverse_each
      end
    end