如何从Rails的控制器中访问路由信息（HTTP动词，动作名称等）？

Question

Say I'm within a controller and I want to get a list of the actions and HTTP verbs that it supports, how would I do that?. Eg

controller.actions # { [ :show, :get ], [ :update, :put ], . . .  }

Or something equivalent.

Answer 1

Something like this:

controller = "users"
controller_routes = []
Rails.application.routes.routes.each do |route|
  if route.to_s.include?(":controller=>\"#{controller}\"")  
    controller_routes << route
  end  
end
puts controller_routes

You get the idea.

Answer 2

To list the http methods (GET, POST, PUT, DELETE) that are valid for each controller's actions run:

rake routes

It will list which http methods are configured for all controllers.

You change which http methods are used by editing /config/routes.rb

The RailsGuide includes a great explanation here .