Flat JSON to Nested JSON using Django RestFramework

Question

I've got a json in my view as below,

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

How can I convert it to a nested JSON as below using Serializers?,

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

Community · Accepted Answer · 2020-06-20 09:12:55Z

1

@No-One, Let suppose you have defined your models as follows.

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

Then I'll suggest you to define your serializers like this.

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');

edited Jun 20, 2020 at 9:12

CommunityBot

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answered Jun 10, 2018 at 7:07

hygull

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2 Comments

JPG Over a year ago

The original post says, the input is a JSON, not any Model instances

hygull Over a year ago

As I understood, in case of @No-one view means the view that we can see in the 3rd image, and @No-one wants this presentation of JSON rather than the one that originally he/she gets.

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