Json 在Django的loaddata中设置外键

我设置了两个类，其中一个用户可能有多个访问密钥

class User(models.Model):
    first_name = models.CharField(max_length=50)
    middle_name = models.CharField(max_length=50)
    last_name = models.CharField(max_length=50)
    email = models.EmailField()
    password = models.CharField(max_length=50)
    birthday = models.DateField()

    def __str__(self):
        return self.first_name+" "+self.last_name

class pets(models.Model):
    user = models.ForeignKey('User')
    type = models.CharField(max_length=50)
    color = models.CharField(max_length=50)

    def __str__(self):
        return self.type

我试图通过一个json文件使用loaddata将数据预加载到表中，该文件如下所示：

[
{
    "fields": {
        "first_name": "John",
        "last_name": "Doe",
        "middle_name": "G",
        "birthday": "1900-07-21",
        "password": "goforit123",
        "email": "John.Doe@gmail.com"
        },
        "model": "account_data.user",
    "pk": 1
},
{
    "fields": {
        "user": "????"
        "type": "dog",
        "color": "blue"
    },
    "model": "account_data.pets",
    "pk": 1
}
]

对于宠物类，我应该在用户中输入什么

---

多谢

您只需使用要链接的对象的反pk即可：

[
{
    "fields": {
        "first_name": "John",
        "last_name": "Doe",
        "middle_name": "G",
        "birthday": "1900-07-21",
        "password": "goforit123",
        "email": "John.Doe@gmail.com"
    },
    "model": "account_data.user",
    "pk": 1  // This is the pk you have to use
},
{
    "fields": {
        "user": 1,  // Use the pk, in this case you're referencing to John Doe
        "type": "dog",
        "color": "blue"
    },
    "model": "account_data.pets",
    "pk": 1
}
]

---

假设用户已经加载，您不知道pk。有办法找到它吗？这里没有，您不在JSON文件中应用逻辑。请记住，这是加载初始/测试数据，因此，如果您有previuos用户将其添加到此JSON文件中。但是是否有方法在.py文件中编写代码以查找外键，然后使用适当的pk生成.JSON？当然，您可以创建，比如：

python manage.py查找_pks

并编写一些代码来探索数据库并在那里编写JSON文件。