Ajax删除链接注销current_user

Question

标题几乎解释了它.我有一个奇怪的情况,允许用户使用Ajax删除通知的视图导致current_user被注销.我甚至不知道从哪里开始调试这个......

这是控制器

class NotificationsController < ApplicationController

    def destroy
        @notification = Notification.find(params[:id])
        @notification.destroy
        respond_to do |format|
            format.js
        end
    end


end

这是整个控制器,没有任何删节.通知由系统生成,因此用户可以采取的唯一操作是"解雇"(即删除)它们.

我也尝试使用更新的respond_with语法并具有相同的效果.

我正在使用Devise和Rails 3.0.9.知道会发生什么 - 或者如何调试？

- 编辑1 -

的routes.rb

resources :notifications, :only => [:destroy]

删除链接

%span.delete= link_to( 'dismiss', notification_path(notification), :method => :delete, :remote => true )

- 编辑2 -

好吧,我注意到日志里有一些新东西 - 见下面的****.

Started DELETE "/notifications/10" for 127.0.0.1 at 2011-06-21 21:47:15 -0500
  Processing by NotificationsController#destroy as JS
  Parameters: {"id"=>"10"}
  SQL (0.4ms)   SELECT name
 FROM sqlite_master
 WHERE type = 'table' AND NOT name = 'sqlite_sequence'
  SQL (0.3ms)   SELECT name
 FROM sqlite_master
 WHERE type = 'table' AND NOT name = 'sqlite_sequence'

  User Load (0.7ms)  SELECT "users".* FROM "users" WHERE "users"."id" = 1 LIMIT 1
  Slug Load (0.4ms)  SELECT "slugs".* FROM "slugs" WHERE ("slugs".sluggable_id = 1 AND "slugs".sluggable_type = 'User') ORDER BY id DESC LIMIT 1
  ****AREL (0.3ms)  UPDATE "users" SET "remember_token" = NULL, "remember_created_at" = NULL, "updated_at" = '2011-06-22 02:47:15.913839', "preferences" = '---
:email_notifications: ''true''
' WHERE "users"."id" = 1
  Notification Load (0.2ms)  SELECT "notifications".* FROM "notifications" WHERE "notifications"."id" = 10 LIMIT 1
  User Load (1.0ms)  SELECT "users".* FROM "users" WHERE "users"."id" = 1 LIMIT 1
  AREL (0.3ms)  UPDATE "users" SET "notifications_count" = COALESCE("notifications_count", 0) - 1 WHERE "users"."id" = 1
  AREL (0.1ms)  DELETE FROM "notifications" WHERE "notifications"."id" = 10
Rendered notifications/destroy.js.erb (0.7ms)
Completed 200 OK in 6416ms (Views: 9.6ms | ActiveRecord: 4.1ms)

所以,就是这样,看起来像用户表的一部分被设置为null,特别是我怀疑正在触发Devise结束会话的remember_token,或者这可能是在会话被破坏后由Devise完成的.但是我该如何追踪呢？

我能想到的原因通知与用户互动的唯一的事情是有一个counter_cache对用户notifications_count.

我很感激有关如何调试的想法和建议!

- 编辑3 -

在使用ruby-debug进行挖掘之后,看起来这个问题与Devise和rails.js脚本的更改有关.看到:

https://github.com/plataformatec/devise/issues/913

https://github.com/ryanb/cancan/issues/280

我正在尝试关于这些线程的一些建议,如果我找到解决方案,我会发布.

Answer 1

我遇到了类似的问题.解决方案就像添加一样简单

<%= csrf_meta_tag %>

到布局.

Answer 2

事实证明这与Rails jQuery UJS驱动程序和Devise的更改有关.我更新了Devise而没有更新jQuery UJS - 并且Devise期望CSRF令牌的处理方式不同,因此它将ajax请求处理为未授权,这意味着破坏了当前用户的会话.升级到最新的jQuery Rails驱动程序修复了该问题.