耙路线错误“缺失：路线定义上的操作键”

I am getting

我正进入（状态

$ rake routes
rake aborted!
ArgumentError: Missing :action key on routes definition, please check your routes.
/usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.1.5/lib/action_dispatch/routing/mapper.rb:243:in `default_controller_and_action'
/usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.1.5/lib/action_dispatch/routing/mapper.rb:117:in `normalize_options!'
/usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.1.5/lib/action_dispatch/routing/mapper.rb:65:in `initialize'
/usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.1.5/lib/action_dispatch/routing/mapper.rb:1487:in `new'
/usr/local/r................
$ rake routes
rake abo