在django中将两个实例保存在同一模型上

from django.db import models

class Parent(models.Model):
    child1 = models.ForeignKey('Child1', on_delete=models.CASCADE)
    child2 = models.ForeignKey('Child2', on_delete=models.CASCADE)

class Child1(models.Model):
    name = models.CharField(max_length=100)

class Child2(models.Model):
    name = models.CharField(max_length=100)

python manage.py makemigrations
python manage.py migrate

from .models import Parent, Child1, Child2

def save_instances():
    child1 = Child1(name='Child 1')
    child2 = Child2(name='Child 2')
    child1.save()
    child2.save()
    parent = Parent(child1=child1, child2=child2)
    parent.save()