Django allauth Configuration - django

Question

I have implemented Django allauth as a method of authenticating users. I am using Django allauth in an attempt to try and handle multi user authentication system. Now when I omit "username" field in my forms.py file, Django complains of the integrity error as below.
IntegrityError at /accounts/accounts/student
UNIQUE constraint failed: accounts_user.username
Request Method: POST
Request URL: http://127.0.0.1:8000/accounts/accounts/student
Django Version: 4.1
Exception Type: IntegrityError
Exception Value:
UNIQUE constraint failed: accounts_user.username
Exception Location: /home/offensive/Desktop/Target/.venv/lib/python3.8/site-packages/django/db/backends/sqlite3/base.py, line 357, in execute
Raised during: accounts.views.StudentSignUpView
Python Executable: /home/offensive/Desktop/Target/.venv/bin/python
Python Version: 3.8.10
Python Path:
['/home/offensive/Desktop/Target',
'/usr/lib/python38.zip',
'/usr/lib/python3.8',
'/usr/lib/python3.8/lib-dynload',
'/home/offensive/Desktop/Target/.venv/lib/python3.8/site-packages']
Server time: Mon, 13 Feb 2023 14:14:23 +0000
below is my forms.py
from django import forms
from django.contrib.auth.forms import UserCreationForm, PasswordChangeForm
from django.contrib.auth import get_user_model
from django.db import transaction
from .models import Student, User, Writter
class StudentSignUpForm(UserCreationForm):
email = forms.EmailField(required=True)
class Meta:
model = get_user_model()
fields = (
"email",
# "username",
)
#transaction.atomic
def save(self):
user = super().save(commit=False)
user.email = self.cleaned_data.get('email')
user.is_student = True
user.save()
student = Student.objects.create(user=user)
return user
class WritterSignUpForm(UserCreationForm):
email = forms.EmailField(required=True)
first_name = forms.CharField(required=True)
last_name = forms.CharField(required=True)
phone = forms.CharField(required=True)
address = forms.CharField(required=True)
class Meta:
model = get_user_model()
fields = (
"email",
# "username",
"phone",
"address",
)
By default, I think Django allauth should populate username field automatically using the email address which I already made "required". Below is the Allauth configurations on my settings.py file.
..................
AUTHENTICATION_BACKENDS = (
"django.contrib.auth.backends.ModelBackend",
"allauth.account.auth_backends.AuthenticationBackend",
)
......
SITE_ID = 1
ACCOUNT_USER_MODEL_USERNAME_FIELD = "email"
ACCOUNT_USERNAME_REQUIRED = False
ACCOUNT_AUTHENTICATION_METHOD = "email"
ACCOUNT_EMAIL_REQUIRED = True
ACCOUNT_UNIQUE_EMAIL = True
# # ACCOUNT_EMAIL_VERIFICATION = "mandatory"
LOGIN_REDIRECT_URL = "/dashboard"
ACCOUNT_LOGOUT_REDIRECT = "/"
ACCOUNT_SESSION_REMEMBER = True
ACCOUNT_SIGNUP_PASSWORD_ENTER_TWICE = False
ACCOUNT_SIGNUP_REDIRECT_URL = "/dashboard"
# ACCOUNT_EMAIL_CONFIRMATION_EXPIRE_DAYS = 3
......

Answer 1

Delete your line ACCOUNT_USER_MODEL_USERNAME_FIELD = "email". It seems you don't have a custom user model, and this setting is intended to tell Django which fieldname in a custom user model should be treated as what it expects to see as username. It's not related to telling Django which fieldname to use for validation.
Try using signals. Create a signals.py file in the same folder you have your forms.py for accounts:
from django.contrib.auth import get_user_model
from django.db.models.signals import pre_save
from django.dispatch import receiver
from django.conf import settings
User = get_user_model()
#receiver(pre_save,sender=User)
def set_username(sender,instance,**kwargs):
instance.username = instance.email
If that doesn't work, and if you haven't already, you should probably look into creating a custom user model, which is the recommended approach anyway.
This article is a good starting point, and this answer goes into how to get rid of the username field completely.