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目前在 Rails 3.2.8 应用程序中遇到了这个问题,我的控制器中有这个调用:

cookies.delete :cookie_name

但是确实没有由 rails except 发出特殊的cookie头app_session,所以cookie没有被删除,只是保持不变,添加域也没有效果:

cookies.delete :cookie_name, domain: 'localhost'

更新:完整的代码片段:

class BuyController < ApplicationController

  COOKIE_KEY = :test

  def index
    @state = {}
    if cookies.has_key?(COOKIE_KEY)
      @state = Rack::Utils.parse_nested_query(cookies[COOKIE_KEY])
      # this has no effect!
      #cookies.delete COOKIE_KEY
      # currently use this as workaround
      cookies[COOKIE_KEY] = {value:''}
    end
    @configs = Option.all
  end

end
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