django - 使用 Django Rest Framework 将扁平 JSON 转换为嵌套 JSON

Question

我的 View 中有一个 json，如下所示，

{
"name":"myname",
"age":30,
"day":20,
"month":"June",
"year":1988
}

如何使用序列化程序将其转换为嵌套 JSON，如下所示？

{
"name":"myname",
"age":30,
"DOB":{
    "day":20,
    "month":"June",
    "year":1988
    }
}

Answer 1

@No-One，假设您已按如下方式定义模型。

http://www.django-rest-framework.org/api-guide/relations/

Use ForeignKey() for nested dictionary like {'day': 20, 'month': 'June', 'year': 1998}.

class Dob(models.Model):
    day = models.IntegerField()
    month = models.CharField(max_length=10)
    year = models.IntegerField()

    def __str__(self):
        return str(self.day)

class User(models.Model):
    name = models.CharField(max_length=50, null=False, blank=False)
    age = models.IntegerField()
    dob = models.ForeignKey(Dob, on_delete=models.CASCADE, null=False)

    def __str__(self):
        return self.name

然后我建议您像这样定义序列化器。

Please comment, if you've queries.

class DobSerializer(serializers.HyperlinkedModelSerializer):
    class Meta:
        model = Dob 
        fields = ('day', 'month', 'year')

class UserSerializer(serializers.HyperlinkedModelSerializer):
    dob = DobSerializer(many=False, read_only=True);

    class Meta:
        model = User
        fields = ('name', 'age', 'dob');