使用链接的Django模型进行快速计数

class User:
    pass


class ItemList:
    pass


# A User can have more than one ItemList
# An ItemList can have more than one User
# Classic M2M

class ItemListOwnership:
    user = fk(User)
    itemlist = fk(ItemList)


# An ItemList has multiple Items

class Item:
    itemlist = fk(ItemList)

这就是我被困的地方。我对纯SQL方法很满意,如果这是唯一有效的方法的话,但我真的不想陷入我正在发布

models.ManyToMany(..) 关系,因为我在 ItemListOwnership ItemList