app\TodoTransformer::transform PHP Method

    public function transform(Todo $todo)
    {
        return ["uid" => (string) $todo->uid ?: null, "order" => (int) $todo->order ?: 0, "title" => (string) $todo->title ?: null, "completed" => !!$todo->completed, "links" => ["self" => "/todos/{$todo->uid}"]];
    }