如何在Rails 4中覆盖控制器或操作的X-Frame-Options [英] How to override X-Frame-Options for a controller or action in Rails 4

问题描述

Rails 4似乎为 X-Frame-Options HTTP响应标头设置了默认值 SAMEORIGIN 。这是非常的安全性，但它不允许您的应用程序部分在其他域上的 iframe 中提供。

Rails 4 appears to set a default value of SAMEORIGIN for the X-Frame-Options HTTP response header. This is great for security, but it does not allow for parts of your app to be available in an iframe on a different domain.

您可以使用 config.action_dispatch.default_headers全局覆盖 X-Frame-Options 的值设置：

You can override the value of X-Frame-Options globally using the config.action_dispatch.default_headers setting:

config.action_dispatch.default_headers['X-Frame-Options'] = "ALLOW-FROM https://apps.facebook.com"

但是如何覆盖它只是为了单个控制器或操作？

But how do you override it for just a single controller or action?

推荐答案

如果要完全删除标题，可以创建 after_action filter：

If you want to remove the header completely, you can create an after_action filter:

class FilesController < ApplicationController
  after_action :allow_iframe, only: :embed

  def embed
  end

private

  def allow_iframe
    response.headers.except! 'X-Frame-Options'
  end
end

当然，您可以编码 after_action 将值设置为不同的值：

Or, of course, you can code the after_action to set the value to something different:

class FacebookController < ApplicationController
  after_action :allow_facebook_iframe

private

  def allow_facebook_iframe
    response.headers['X-Frame-Options'] = 'ALLOW-FROM https://apps.facebook.com'
  end
end

请注意需要在调试时清除某些浏览器中的缓存（Chrome for me）。

Note that you need to clear your cache in certain browsers (Chrome for me) while debugging this.

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