Given a Django model with a JSONField, what is the correct way of serializing and deserializing it using Django Rest Framework?
I've already tried crating a custom serializers.WritableField and overriding to_native and from_native:
from json_field.fields import JSONEncoder, JSONDecoder
from rest_framework import serializers
class JSONFieldSerializer(serializers.WritableField):
def to_native(self, obj):
return json.dumps(obj, cls = JSONEncoder)
def from_native(self, data):
return json.loads(data, cls = JSONDecoder)
But when I try to updating the model using partial=True, all the floats in the JSONField objects become strings.
If you're using Django Rest Framework >= 3.3, then the JSONField serializer is now included. This is now the correct way.
If you're using Django Rest Framework < 3.0, then see gzerone's answer.
If you're using DRF 3.0 - 3.2 AND you can't upgrade AND you don't need to serialize binary data, then follow these instructions.
First declare a field class:
from rest_framework import serializers
class JSONSerializerField(serializers.Field):
""" Serializer for JSONField -- required to make field writable"""
def to_internal_value(self, data):
return data
def to_representation(self, value):
return value
And then add in the field into the model like
class MySerializer(serializers.ModelSerializer):
json_data = JSONSerializerField()
And, if you do need to serialize binary data, you can always the copy official release code
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