How to filter the list by parent parent?

Question

Django

class Category(models.Model):
        pass

   class News(models.Model):
       category = models.ForeignKey(Category)

   class Message(models.Model):
        news = models.ForeignKey(News)

How can I filter messages by a specific category ID?

Answer 1

For example, like this:
Message.objects.filter(news__category__in=[])
https://docs.djangoproject.com/en/3.1/topics/db/qu...