CODEWITHSUNDEEP
djangopython-3.xdjango-rest-framework
Arjunsingh
Arjunsingh

Reputation: 773

Basic Django Authentication Error

I've setup a basic authentication, but upon login function which doesnt give any error, if I return something then I get an error stating - 

{'session_key': ['Session with this Session key already exists.']}

This is the code:

def header_auth(request):
    auth_header = request.META['HTTP_AUTHORIZATION']
    encoded_credentials = auth_header.split(' ')[1]  # Removes "Basic " to isolate credentials
    decoded_credentials = base64.b64decode(encoded_credentials).decode("utf-8").split(':')
return decoded_credentials[0], decoded_credentials[1]


def login_view(request):
    username, password = header_auth(request)
    user = authenticate(request, username=username, password=password)
    if user is not None:
        try:
            login(request, user)
            print('after login')
        except Exception as e:
            print('login error', e)
        return HttpResponse('Authorized', status=200)
    else:
        return HttpResponse('Not Authorized', status=403)


def logout_view(request):
    logout(request)


class FyndUser(AbstractUser):
    company_id = models.IntegerField(unique=True)

If I sent the user object instead of Response then I receive the error that the user object has not attribute get.

Upvotes: 0

Views: 1060

Answers (2)

Addison Klinke
Addison Klinke

Reputation: 1186

I ran into the same error after overriding the pre_save signal to do a full_clean as suggested here. For those that want to maintain the signal override, you can limit the affected models so the default Django auth still works

from django.db.models.signals import pre_save
from django.dispatch import receiver

@receiver(pre_save)
def pre_save_handler(sender, instance, *args, **kwargs):
    """Override signal to validate fields of selected models before saving."""
    user_models = ['MyModel1', 'MyModel2', ...]
    if sender in user_models:
        instance.full_clean()

Upvotes: 1

Arjunsingh
Arjunsingh

Reputation: 773

Got the bug. I had set up a pre_save signal to one all the models to do a full_clean. So it does a full clean to all the models before saving. It was failing here - 

env/lib/python3.6/site-packages/django/db/models/base.py in full_clean
line 1166 at raise ValidationError(errors)

Removing the signal worked but I still don't know what was the problem.

Upvotes: 1

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