如何从 Rails 3.07 中的过滤器中排除单个控制器操作？

Question

class ApplicationController < ActionController::Base
  protect_from_forgery
  before_filter :check_session_expiry, :except => :login

如何排除单个控制器（例如用户控制器）的登录操作？

Answer 1

首先，我没有在带有导轨的机器上进行测试，但以下应该可以工作：

class UserController < ApplicationController
  skip_filter :check_session_expiry, :only => :foo

  # following is DEPRECATED as far as I know
  #skip_before_filter :check_session_expiry, :only => :foo

  def foo
  end
end

Answer 2

class ApplicationController < ActionController::Base
  before_filter :check_session_expiry


  def check_session_expiry
     return true if self.class != UsersController && self.action == "login"
     # do your thing
  end

Answer 3

我只是将控制器中的 check_session_expiry 重新定义为空方法。

  class UserController < ...
    ...
    private
    def check_session_expire
      # optional if other actions shall still use the filter
      super unless self.action == 'login'
    end
  end