generate_csrf_token

# File actionpack/lib/action_controller/metal/request_forgery_protection.rb, line 519
      def generate_csrf_token # :nodoc:
        if urlsafe_csrf_tokens
          SecureRandom.urlsafe_base64(AUTHENTICITY_TOKEN_LENGTH)
        else
          SecureRandom.base64(AUTHENTICITY_TOKEN_LENGTH)
        end
      end