How to create a user with AbstractBaseUser or AbstractUser. (Login Error)

Question

I am trying to use my Person class as user in models.py. However I tried using AbstractUser and AbstractBaseUser. Both of them give me errors in the part where I try to log in, I tried several ways until I realized that I need help from someone with more experience and knowledge than I do.

My models.py:

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

class Pessoa(AbstractUser):
    id_pessoa = models.AutoField(primary_key=True)
    cnpj = models.CharField(max_length=14, unique=True)
    nome = models.CharField(max_length=70)
    email = models.CharField(max_length=100, blank=True, null=True)
    senha = models.CharField(max_length=40, null=False)
    ativo = models.BooleanField(blank=True, null=True)
    datacadastro = models.DateField(blank=True, null=True)
    cidade = models.CharField(max_length=50, blank=True, null=True)
    uf = models.CharField(max_length=2, blank=True, null=True)
    USERNAME_FIELD = 'cnpj'

    class Meta:
        managed = False
        db_table = 'pessoa'

Detail: I am unable to remove or add fields in any template I am using, because I have used inespectdb to create the models based on the database i am using ( the same one that is already full of data ). Any change, with the exception of basic changes , is out of the cogitation.

Below my views.py with def that validates the login and redirects to the dashboard .

def dash_login(request):
    form = LoginForm(request.POST, None)
    if request.method == 'POST':
        #if form.is_valid():
        username = form.data['cnpj']
        password = form.data['senha']
        user = authenticate(username=username)
        print(username)
        #p = Pessoa.objects.filter(cnpj=form.data['cnpj']).values('id_pessoa')[0]['id_pessoa']
        #login(request, user)
        print(request.user.is_authenticated)
        #return render(request, 'dashboard.html')
    return render(request, 'login.html', {'form': form})

I use print() to test the commands before running out, at the moment when it arrives on the line:

user = authenticate(username=username)

It triggers this error:

File"C:\\Users\\Pichau\\AppData\\Local\\Programs\\Python\\Python37\\lib\\site-packages\\django\\db\\backends\\utils.py", line 85, in _execute return self.cursor.execute(sql, params) django.db.utils.ProgrammingError: column pessoa.password does not exist LINE 1: SELECT "pessoa"."password", "pessoa"."last_login", "pessoa"....

** Regardless I put password inside the authenticate error is shot. **

This was the second option:

Where I fall into the same error, if I remove the p and use return render (request, 'dashboard.html') I'm redirecting without the user id, which causes me problems getting its data inside the dashboard.

However I still have the main problem, this table is logging in to Django login and not in the login I created within models.py | forms.py models.py | forms.py

Anyway, appreciate the help for anything in this post, will be grateful for anyone who give me any direction.

Answer 1

There's no ability to set an option for the password field the way you can with USERNAME_FIELD. However, one thing to bear in mind is that the name of the Django model field doesn't have to match what's in the underlying db table; you can use the db_column option on your field definition:

password = models.CharField(max_length=40, null=False, db_column='senha')

The other issue is that you should certainly be using AbstractBaseUser, not AbstractUser; the latter adds a load of fields that you don't want or have.