"Unable to log in with provided credential" in Django REST Framework

Question

So, I'm learning DjangoRF through a Udemy course in which we build an API with a token authentication. All code written, I launch my server, I try to login via example client and this error occur:

Status Code:  400

{'non_field_errors': ['Unable to log in with provided credentials.']}

This happen with both user and superuser.

Then I try to login from the admin page in the Browsable API and the superuser works, the user not.

I'm new to this framework and even with Python so i actually can't figure aout a solution.

CLIENT:

    import requests


def client():
    credentials = {"username ": "user", "password": "user"}
    response = requests.post('http://127.0.0.1:8000/api/rest-auth/login/', data=credentials)
    print('Status Code: ', response.status_code)
    response_data = response.json()
    print(response_data)


if __name__ == '__main__':
    client()

SETTINGS.PY

"""
Django settings for userProfileAPI project.

Generated by 'django-admin startproject' using Django 4.0.

For more information on this file, see
https://docs.djangoproject.com/en/4.0/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/4.0/ref/settings/
"""

from pathlib import Path

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/4.0/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'django-insecure-efj3a1u0y%jc5!%k5q_mc8l)^1vm(n*tq1=_kdoyvb(s!c_4qv'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',

    'rest_framework',
    'rest_framework.authtoken',
    'rest_auth',
    'profiles',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'userProfileAPI.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [BASE_DIR / 'templates']
        ,
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

WSGI_APPLICATION = 'userProfileAPI.wsgi.application'


# Database
# https://docs.djangoproject.com/en/4.0/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': BASE_DIR / 'db.sqlite3',
    }
}


# Password validation
# https://docs.djangoproject.com/en/4.0/ref/settings/#auth-password-validators

 AUTH_PASSWORD_VALIDATORS = [
     {
         'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
     },
     {
         'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
     },
     {
         'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
     },
     {
         'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
     },
 ]


# Internationalization
# https://docs.djangoproject.com/en/4.0/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/4.0/howto/static-files/

STATIC_URL = 'static/'

# Default primary key field type
# https://docs.djangoproject.com/en/4.0/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

MEDIA_URL = 'media/'
MEDIA_ROOT = 'uploads'

REST_FRAMEWORK = {
    'DEFAULT_AUTHENTICATION_CLASSES': [
        'rest_framework.authentication.TokenAuthentication',
        'rest_framework.authentication.SessionAuthentication',
    ]
}

MODELS.PY

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


# Create your models here.

class Profile (models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    bio = models.CharField(max_length=240, blank=True) # "blank=True" serve ad indicare che il campo può anche rimanere vuoto
    city = models.CharField(max_length=30, blank=True)
    avatar = models.ImageField(null=True, blank=True)



    def __str__(self):
        return self.user.username


class ProfileStatus(models.Model):
    user_profile = models.ForeignKey(Profile, on_delete=models.CASCADE)
    status_content = models.CharField(max_length=240)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)


    class Meta:
        verbose_name_plural = 'statuses'


    def __str__(self):
        return self.user_profile

SERIALIZERS.PY

from rest_framework import serializers
from profiles.models import Profile, ProfileStatus


class ProfileSerializer(serializers.ModelSerializer):

    user = serializers.StringRelatedField()
    avatar = serializers.ImageField(read_only=True)

    class Meta:
        model = Profile
        fields = '__all__'


class ProfileAvatarSerializer(serializers.ModelSerializer):

    class  Meta:
        model = Profile
        fields = ['avatar']

class ProfileStatusSerializer(serializers.ModelSerializer):

    user_profile = serializers.StringRelatedField(read_only=True)
    class  Meta:
        model = ProfileStatus
        fields = ['avatar']

SIGNALS.PY

from django.contrib.auth.models import User
from django.db.models.signals import post_save
from django.dispatch import receiver
from profiles.models import Profile


@receiver(post_save, sender=User)
def create_profile(sender, instance , created, **kwargs):
    print('Created:', created)
    if created:
        Profile.objects.create(user=instance)

SCREENSHOT IDE ERROR (user or superuser is the same): screenshot ide error

SCREENSHOT BROWSABLE API LOGIN WITH SIMPLE USER: login user

SCREENSHOT BROWSABLE API LOGIN WITH SUPERUSER: login superuser

Obviously I'm sure that credentials are always correct (don't mind that the password does not respect the permissions in setting.py, I uncommented permissions in order to post here)

Thanks you.

Answer 1

Can you also share the code where you are saving the user, I think you are not saving the hashed password. You have to do something like this: user.set_password(password) user.save()