Getting error : 'User' object has no attribute 'user'. in django python

Question

i am new here in django python, I am learning 2 table relations, primary key foreign key scenario, for that i am using existing django user model and create another model userprofile, I want to list data of user and profile, so for that i have created rest api, when i do run api http://127.0.0.1:8000/api/v1/users/, it gives me this error : 'User' object has no attribute 'user'. here i have added my whole code, can anyone please look my code and help me to resolve this issue ? models.py

from django.db import models
from django.contrib.auth.models import User
from django.contrib.auth import get_user_model


class Songs(models.Model):
    # song title
    title = models.CharField(max_length=255, null=False)
    # name of artist or group/band
    artist = models.CharField(max_length=255, null=False)

    def __str__(self):
        return "{} - {}".format(self.title, self.artist)


class UserProfile(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    title = models.CharField(max_length=255, null=False)
    dob = models.CharField(max_length=255, null=False)
    address = models.CharField(max_length=255, null=False)
    country = models.CharField(max_length=255, null=False)
    city = models.CharField(max_length=255, null=False)
    zip = models.CharField(max_length=255, null=False)
    photo = models.CharField(max_length=255, null=False)

    def __str__(self):
        return "{} - {}".format(self.title, self.dob, self.address, self.country, self.city, self.zip, self.photo,
                                self.user)

serializers.py

from rest_framework import serializers
from .models import Songs
from .models import UserProfile

from django.contrib.auth.models import User


class SongsSerializer(serializers.ModelSerializer):
    class Meta:
        model = Songs
        fields = ("title", "artist")


class UserProfileSerializer(serializers.ModelSerializer):
    class Meta:
        model = UserProfile
        fields = ('user', 'title', 'dob', 'address', 'country', 'city', 'zip', 'photo')


class UserSerializer(serializers.ModelSerializer):
    user = UserProfileSerializer(required=True)

    class Meta:
        model = User
        fields = ('url', 'email', 'first_name', 'last_name', 'password', 'user')
        extra_kwargs = {'password': {'write_only': True}}

views.py

import rest_framework.generics
from rest_framework import generics
from .models import Songs
from .serializers import SongsSerializer
from .serializers import UserSerializer
from django.contrib.auth.models import User

from rest_framework import viewsets

class ListSongsView(generics.ListAPIView):
    """
    Provides a get method handler.
    """
    queryset = Songs.objects.all()
    serializer_class = SongsSerializer


class UserViewSet(viewsets.ModelViewSet): #generics.ListAPIView, generics.RetrieveAPIView
    # viewsets.ModelViewSet
    queryset = User.objects.all()
    #print(queryset.count());
    #exit()
    serializer_class = UserSerializer

Check the documentation - django-rest-framework.org/api-guide/relations — Dmitry Leiko
– Dmitry Leiko, Commented Dec 2, 2019 at 14:29

neverwalkaloner · Accepted Answer · 2019-12-03 05:41:47Z

2

First of all, I think you need to use a OneToOneField for the User - UserProfile relation. Otherwise, one user may have multiple profiles, which is not common practice.

Now regarding the problem, the User model doesn't have a user attribute. You need to use related_name to get access to the reverse related object.

To fix this problem, you can refactor your code to this:

class UserProfile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE, related_name="user_profile")

class UserSerializer(serializers.ModelSerializer):
    user_profile = UserProfileSerializer(required=True) # rename this field

    class Meta:
        model = User
        fields = ('url', 'email', 'first_name', 'last_name', 'password', 'user_profile')
        extra_kwargs = {'password': {'write_only': True}}

edited Dec 3, 2019 at 5:41

answered Dec 2, 2019 at 15:16

neverwalkaloner

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3 Comments

Nikul Panchal Over a year ago

getting error : 'RelatedManager' object has no attribute 'user'

neverwalkaloner Over a year ago

@NikulPanchal Sorry forgot to replace foreignkey with onetoone in my answer. Check updates please.

Nikul Panchal Over a year ago

You are genius :)

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