GenericRestServer/lib/generic_rest_server_web/controllers/user_token_json.ex

defmodule GenericRestServerWeb.UserTokenJSON do
  def token(%{user: user}) do
    %{
      data: %{
        id: user.id,
        email: user.email,
        token: user.token
      }
    }
  end

  def error(%{error: error}) do
    %{
      error: error
    }
  end
end