Serializer user "Invalid data. Expected a dictionary, but got User" - django

Question

I am trying to display the fields of my user model but I always get that my serializer is not valid
{
"non_field_errors": [
"Invalid data. Expected a dictionary, but got User."
]
}
this is my model
from django.db import models
from django.contrib.auth.models import BaseUserManager, AbstractBaseUser, PermissionsMixin
class UserManager(BaseUserManager):
def _create_user(self, username, password, is_staff, is_superuser, **extra_fields):
user = self.model(
username=username,
is_staff=is_staff,
is_superuser=is_superuser,
**extra_fields
)
user.set_password(password)
user.save(using=self.db)
return user
def create_user(self, username, password=None, **extra_fields):
return self._create_user(username, password, False, False, **extra_fields)
def create_superuser(self, username, password=None, **extra_fields):
return self._create_user(username, password, True, True, **extra_fields)
class User(AbstractBaseUser, PermissionsMixin):
username = models.CharField(max_length=255, unique=True)
email = models.EmailField( max_length=255, blank=True, null=True)
name = models.CharField(max_length=255, blank=True, null=True)
age = models.PositiveIntegerField()
is_active = models.BooleanField(default=True)
is_staff = models.BooleanField(default=False)
objects = UserManager()
USERNAME_FIELD = 'username'
REQUIRED_FIELDS = []
def __str__(self):
return f"{self.id} {self.name} {self.username} {self.age}"
this is my serializer
class UserUpdateSerializer(serializers.ModelSerializer):
class Meta:
model = User
fields = ['id', 'email', 'username', 'name', 'age']
this is my view
class UserUpdateApiView(APIView):
def get(self, request, pk):
try:
queryset = User.objects.get(pk=pk)
serializer = UserUpdateSerializer(data=queryset)
if serializer.is_valid(raise_exception=True):
return Response(data=serializer.data)
except User.DoesNotExist:
return Response(data={"error": "User no found"}, status=status.HTTP_404_NOT_FOUND)

Answer 1

You have used the data keyword argument, i think the problem is here. Pass the queryset without keyword argument:
class UserUpdateApiView(APIView):
def get(self, request, pk):
try:
queryset = User.objects.get(pk=pk)
serializer = UserUpdateSerializer(queryset)
return Response(serializer.data)
except User.DoesNotExist:
return Response(data={"error": "User no found"}, status=status.HTTP_404_NOT_FOUND)
data is the serialized output in fact. the keyword argument for passing your input model data is named instance I believe