如何为每个控制器栏设置一个before_filter？

Question

In Ruby on Rails, I would like to add a before_filter to every controller except for one. Currently I have in ApplicationController :

before_filter :authenticate

Is there a way to apply this rule inside ApplicationController rather than adding before_filter :authenticate in every controller except the public controller?

Answer 1

If you want to run this filter in every controller but one, why not simply skip it?

class PublicController < ApplicationController
  skip_before_filter :authenticate
end

If you want to skip a particular action, you can use :except :

before_filter :authenticate, :except => [ :index ]

Answer 2

将before过滤器放在ApplicationController ，然后在不需要的控制器中将其跳过：

skip_before_filter :authenticate