class ActionDispatch::ActionableExceptions

def redirect_to(location) 

def redirect_to(location)
  uri = URI.parse location
  if uri.relative? || uri.scheme == "http" || uri.scheme == "https"
    body = "<html><body>You are being <a href=\"#{ERB::Util.unwrapped_html_escape(location)}\">redirected</a>.</body></html>"
  else
    return [400, { "Content-Type" => "text/plain" }, ["Invalid redirection URI"]]
  end
  [302, {
    "Content-Type" => "text/html; charset=#{Response.default_charset}",
    "Content-Length" => body.bytesize.to_s,
    "Location" => location,
  }, [body]]
end