Django REST Framework JSON Field

fields.py

import json
from rest_framework import serializers

class JSONField(serializers.WritableField):
    
    def to_native(self, obj):
        return json.dumps(obj)
    
    def from_native(self, value):
        return json.loads(value)

I'd also maybe add a try/catch to from_native, so that serialisation wouldn't fail pre-emptively, e.g.:

def from_native(self, value):
    try:
        val = json.loads(value)
    except TypeError:
        raise serializers.ValidationError(
            "Could not load json <{}>".format(value)
        )
    return val