TypeError: Object of type 'User' is not JSON serializable

Question

How to return a list of objects in Django Rest Framework.I am calling a function which returns list of objects.

from rest_framework.views import APIView
from rest_framework.response import Response
import json

class MyView(APIView):
    from .serializers import MySerializer
    from app.permissions import MyPermissionClass
    from .models import MyModel

    serializer_class = MySerializer
    queryset = MyModel.objects.all()
    permission_classes = (MyPermissionClass,)
    pagination_class = None

    def get(self, request, *args, **kwargs):
        data=myfunction(a,b,c)
        # data={list}<class 'list'>: [<User: Negiiii | negiiii>, <User: Negiiii | negiiii>]
        data=json.dumps(data)
        return Response({"data":data})

Result that I need:

[
  {
    "name":"Negi",
    "rollno":14
   },
  {
    "name":"Negi",
    "rollno":13
  }
]

Is that a User model Queryset?

JPG
– JPG

2019-05-20 05:02:31 +00:00
Commented May 20, 2019 at 5:02 — JPG
– JPG, Commented May 20, 2019 at 5:02
can you add the MySerializer class?

JPG
– JPG

2019-05-20 05:12:08 +00:00
Commented May 20, 2019 at 5:12 — JPG
– JPG, Commented May 20, 2019 at 5:12

JPG · Accepted Answer · 2019-05-20 05:07:10Z

1

You can use DRF Serializers to serialize the data. First you need to define a serializer class as,

# serializers.py
from rest_framework import serializers


class UserSerializer(serializers.ModelSerializer):
    class Meta:
        model = UserModel
        fields = ('name', 'rollno')

and then, use the UserSerializer in your views as,

def get(self, request, *args, **kwargs):
    data = myfunction(a, b, c)
    response_data = UserSerializer(data, many=True)
    return Response({"data": response_data.data})

answered May 20, 2019 at 5:07

JPG

89.4k24 gold badges164 silver badges235 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Negiiii Over a year ago

Instead of using response_data = MySerializer(data, many=True) I have used response=self.get_serializer(data, many=True) Thank you for your help!

JPG Over a year ago

I could've written a better answer if you'd provide right info at the right time :)

Collectives™ on Stack Overflow

TypeError: Object of type 'User' is not JSON serializable

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related