如何在Rails 4中更改HTTP标头，例如X-UA-Compatible？

Question

Rails 4预先填充了一些＆＃34;最佳实践＆＃34; HTTP标头：

$ http -j "http://127.0.0.1:3000"
(...)
HTTP/1.1 204 No Content
(...)
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-UA-Compatible: chrome=1
X-XSS-Protection: 1; mode=block

如何在Rails 4中更改这些标题？

Answer 1

要禁用（或更改）该行，请将以下行添加到config/application.rb：

config.action_dispatch.default_headers = {
  'X-Frame-Options' => 'DENY',
  'X-UA-Compatible' => 'IE=EmulateIE7'
}