limit_choice_to外键中特定模型类的所有对象

Question

例

class Base():
     pass

class A(Base)
parent=models.Foreignkey("self", limit_choices_to=(all members of the B class)

class B(Base)
parent=models.Foreignkey("self", limit_choices_to=(all members of the A class)

仅获取特定类的对象的limit_choices_to的查询语法是什么？）

Answer 1

这项工作不是吗？

class Base(Model):
    parent=models.Foreignkey("self")

    class Meta:
        abstract = True


class A(Base):
    parent=models.Foreignkey("B")

class B(Base):
    parent=models.Foreignkey("A")