How to prevent IE11 Compatibility Mode for Intranet Sites via Ruby-on-Rails?

Question

I am working on a project that the client only allows their employers to look at intranet site. Therefore, in my project IE11 defaults to compatibility mode for intranet sites. Meta tag <meta http-equiv="X-UA-Compatible" content="IE=edge"> gets overwritten. How do we set the content="IE=edge" even on intranet sites?

Answer 1

After searching for an answer, my co-worker helped solved this problem in Ruby. I research why IE11 was ignoring:

<meta http-equiv="X-UA-Compatible" content="IE=edge" />

The setting for IE=Edge has to render on the response header. This post Force IE compatibility mode off using tags helped lead to an answer.

In your project find your controller that sets up your headers. In our project it is application_controller.rb.

Add:

before_filter :set_default_headers

  def set_default_headers
    response.headers["X-UA-Compatible"] = "IE=edge"
  end

This will allow IE11 to view the page in Edge even when the site is rendering for intranet view.