Window.unload在卸载后触发post

Question

Window.unload在卸载后触发post

ind*_*dex 7 javascript jquery ruby-on-rails

我正在尝试在卸载页面之前对服务器发帖,然后我按照这个并且它工作正常.我的问题是关于window.unload的$.员额被触发后它已卸载.我尝试使用注销链接并检查我的日志,我得到以下内容:

Started GET "/signout" for 127.0.0.1 at 2012-11-22 00:15:08 +0800
Processing by SessionsController#destroy as HTML
Redirected to http://localhost:3000/
Completed 302 Found in 1ms


Started GET "/" for 127.0.0.1 at 2012-11-22 00:15:08 +0800
Processing by HomeController#index as HTML
  Rendered home/index.html.erb within layouts/application (0.4ms)
  Rendered layouts/_messages.html.erb (0.1ms)
Completed 200 OK in 13ms (Views: 12.9ms)


Started POST "/unloading" for 127.0.0.1 at 2012-11-22 00:15:08 +0800
Processing by HomeController#unloading as */*
  Parameters: {"p1"=>"1"}
WARNING: Can't verify CSRF token authenticity
Completed 500 Internal Server Error in 0ms

NoMethodError (undefined method `id' for nil:NilClass):
  app/controllers/home_controller.rb:43:in `unloading'

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第一部分是注销,然后用户被重定向到root 然后它运行帖子('/ unloading').

有没有办法让'/ unloading'先执行然后执行任何卸载操作？

我有这个作为我的jquery帖子

$(window).unload ->
  $.ajax {
    async: false,
    beforeSend: (xhr) ->
      xhr.setRequestHeader('X-CSRF-Token', $('meta[name="csrf-token"]').attr('content'))
    , url: '/unloading'
    , type: 'Post'
    , data: {
      p1: '1'
    }
  }

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更新

所以我确实将ajax请求转移到beforeunload并且它正在工作但是我必须做一个return null删除出现的对话框,因为如果我不这样做,ajax仍然在弹出对话框时触发(即使没有回答"是/否我想离开这个页面").结果如下:

window.onbeforeunload ->
  $.ajax {
    async: false,
    beforeSend: (xhr) ->
      xhr.setRequestHeader('X-CSRF-Token', $('meta[name="csrf-token"]').attr('content'))
    , url: '/unloading'
    , type: 'Post'
    , data: {
      p1: '1'
    }
  }
  return null

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此外,我现在只尝试使用Chrome,它按预期工作.然而,尝试其他浏览器.