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I can't add a new user using Django Rest Framework. Here is my code from models.py:

class Profile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    password = models.CharField(max_length=15, default= None)
    first_name = models.CharField(max_length=100, validators=[name_validator])
    last_name = models.CharField(max_length=100, validators=[name_validator])
    email = models.CharField(max_length=100, validators=[mail_validator])
    created_at = models.DateTimeField(auto_now_add=True)

As you can see I am using models.OneToOneField cause I want to extend the default user to add some more fields.

Bellow is my serializers.py file:

class ProfileSerializer(serializers.ModelSerializer):
    class Meta:
        model = Profile
        permissions_classes = [
            permissions.AllowAny
        ]
        fields = '__all__'

The viewset is the following:

class UserViewset(viewsets.ModelViewSet):
    queryset = Profile.objects.all()
    serializer_class = ProfileSerializer

When I go to my endpoints and try to add a new user, I cannot put anything in the "user" field:

Click for image

I am a beginner and it would be of great help.

Thank you!

Mihai Cozmuța
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  • You need to have users before you can add it to **Profile** model. You can test this by adding some users before adding profile. Now when you add profile you will get all the available users for adding to the profile. – isAif Dec 30 '20 at 11:15
  • But What I want is to create a new user with all those attributes. Not to select from some existing users. – Mihai Cozmuța Dec 30 '20 at 11:27
  • For that you need **writable nested serializer**. Another method is to override the create method of **user serializer**. Check this answer https://stackoverflow.com/a/29867704/4901118 – isAif Dec 30 '20 at 11:57

2 Answers2

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you can to this

from django.contrib.auth.models import User

class Profile(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    password = models.CharField(max_length=15, default= None)
    first_name = models.CharField(max_length=100, validators=[name_validator])
    last_name = models.CharField(max_length=100, validators=[name_validator])
    email = models.CharField(max_length=100, validators=[mail_validator])
    created_at = models.DateTimeField(auto_now_add=True)

serializer.py

class UserSerializer(serializers.ModelSerializer):
    class Meta:
        model = User
        fields = "__all__"

class ProfileSerializer(serializers.ModelSerializer):
    user = UserSerializer(read_only=True)
    class Meta:
        model = Profile
        fields = '__all__'

views.py

class UserViewset(viewsets.ModelViewSet):
    queryset = Profile.objects.all()
    serializer_class = ProfileSerializer
    permission_classes = [permission. AllowAny,]
Kenedy Nopriansyah
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When you want to extend the default user to add some more fields, the best way for that is substituting a custom User model by inheritance the AbstractUser model. Using this way, you can CRUD the user easily.

Vu Phan
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