Rails:如何使用带有params的范围和使用带有params默认值的路由

I have such lines in routes.rb:

我有这样的线路。

scope "/:subdomain/" do
  resource :order, :only => [:new, :create, :show, :update, :edit, :destroy] do
    get   :cancel,    :on => :member 
    put   :counter,   :on => :member 
  end
end
sc