Returns the path minus the web server relative installation directory. This can be set with the environment variable RAILS_RELATIVE_URL_ROOT. It can be automatically extracted for Apache setups. If the server is not Apache, this method returns an empty string.

Source Code

# File action_controller/request.rb, line 265
def relative_url_root
  @@relative_url_root ||= case
    when @env["RAILS_RELATIVE_URL_ROOT"]
      @env["RAILS_RELATIVE_URL_ROOT"]
    when server_software == 'apache'
      @env["SCRIPT_NAME"].to_s.sub(/\/dispatch\.(fcgi|rb|cgi)$/, '')
    else
      ''
  end
end