@supervisor.invite!(current_user)
      # call short io api here
      raw_token = @supervisor.raw_invitation_token
      invitation_url = Rails.application.routes.url_helpers.accept_user_invitation_url(invitation_token: raw_token, host: request.base_url)
      hash_of_short_urls = @supervisor.phone_number.blank? ? {0 => nil, 1 => nil} : handle_short_url([invitation_url, request.base_url + "/users/edit"])