当我们有多个对象管理器时，Django 如何评估对象管理器？

Question

考虑 Django ORM 中的以下对象：

class Post(models.Model):
   ...
   published = PublishedPostManager()
   objects = models.Manager()

现在在Django admin中，只显示已发布的。我们可以改变行为，让 Django ORM 默认使用对象而没有任何顺序吗？

Answer 1

如docs所述：

If you use custom Manager objects, take note that the first Manager Django encounters (in the order in which they’re defined in the model) has a special status. Django interprets the first Manager defined in a class as the “default” Manager

所以默认使用objects，放在published之前：

class Post(models.Model):
    ...
    objects = models.Manager()
    published = PublishedPostManager()

或将其定义为模型中的默认管理器Meta:

class Post(models.Model):
    ...
    published = PublishedPostManager()
    objects = models.Manager()

    class Meta:
        default_manager_name = 'objects'

当我们有多个对象管理器时，Django 如何评估对象管理器？

How Django evaluates object managers when we have multiple ones?

django

django-models

django-queryset