如何从控制器中获取当前操作？

Question

How do I get the current action from within a controller? current_page? works for views, but not controllers.

redirect_to step3_users_path unless current_page?(step3_users_path)

I also tried

controller.action_name == 'step3'

I also tried

params[:action_name] == 'step3'

Answer 1

控制器具有action_name方法/访问器（在AbstractController::Base为当前rails定义， ActionController::Base为旧版本）

Answer 2

you can use __method__ to get to the name of the current method.

eg

 def Klass
   def method1
     puts __method__
   end
 end

 > k = Klass.new
 > k.method1
 => :method1

Once the request goes through Rails, you will be able to access this in the Controller:

params[:controller]
params[:action]

In a view, you can access action_name

Answer 3

This worked.

logger.debug params
redirect_to step3_users_path unless params[:action] == 'step3'

Answer 4

A simple way to get started is to set a breakpoint somewhere within your code where your action is running.

If you are using pry , do so with binding.pry , then you can list all params that are being passed by that action by writing params into the console and pressing enter.

Once you get the name of the param, then get it by using, for example params[:action] , to get the name of the controller action.