Django converts queryset (serialization of model instance) to a dictionary (json) method
created at 07-17-2021
views: 1
There are many documents on how to serialize a model query set, but how to serialize the fields of a model instance to JSON?
method 1: use django's own method serializers¶
from django.core import serializers
obj = SomeModel.objects.first()
serialized_obj = serializers.serialize('json', [ obj, ])
serialized_obj = serializers.serialize('python', [ obj, ])
difference between json and python format¶
json format will return the result as str, while python will return the result list or OrderedDict
method 2: use model_to_dict¶
from django.forms.models import model_to_dict
from django.http import JsonResponse
obj = SomeModel.objects.first()
model_to_dict(obj )
method 3: use json.dumps()¶
from django.forms import model_to_dict
from django.core.serializers.json import DjangoJSONEncoder
from django.db.models import Model
class ExtendedEncoder(DjangoJSONEncoder):
def default(self, o):
if isinstance(o, Model):
return model_to_dict(o)
return super().default(o)
json.dumps(data, cls=ExtendedEncoder)
created at 07-17-2021
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