method

concerns

rails latest stable - Class: ActionDispatch::Routing::Mapper::Scoping::Concerns

concerns(*args)

public

Use the named concerns

resources :posts do
  concerns :commentable
end

Concerns also work in any routes helper that you want to use:

namespace :posts do
  concerns :commentable
end

# File actionpack/lib/action_dispatch/routing/mapper.rb, line 2059
        def concerns(*args)
          options = args.extract_options!
          args.flatten.each do |name|
            if concern = @concerns[name]
              concern.call(self, options)
            else
              raise ArgumentError, "No concern named #{name} was found!"
            end
          end
        end

concerns

Method deprecated or moved

Related methods