Django User Registration with custom user model

Question

I want to create a signup form for a Django custom user model using abstractuser. I don't want anything special, just the ability to later on add custom fields if needed.

I understand from the docs that I need to:

• set AUTH_USER_MODEL
• define a custom user model by subclassing AbstractUser
• define a custom model manager by subclassing UserManager
• subclass UserCreationForm and UserChangeForm

Here's my current code:

My settings.py:

AUTH_USER_MODEL = 'users.CustomUser'

My models.py:

from django.contrib.auth.models import AbstractUser, UserManager


class CustomUserManager(UserManager):
    pass    

class CustomUser(AbstractUser):
    objects = CustomUserManager()

My forms.py:

from django import forms
from django.contrib.auth.forms import UserCreationForm, UserChangeForm

from .models import CustomUser

class CustomUserCreationForm(UserCreationForm):

    class Meta(UserCreationForm.Meta):
        model = CustomUser
        fields = UserCreationForm.Meta.fields

class CustomUserChangeForm(UserChangeForm):

    class Meta:
        model = CustomUser
        fields = UserChangeForm.Meta.fields

My admin.py:

from django.contrib import admin
from django.contrib.auth import get_user_model
from django.contrib.auth.admin import UserAdmin

from .forms import CustomUserCreationForm, CustomUserChangeForm
from .models import CustomUser


class CustomUserAdmin(UserAdmin):
    model = CustomUser
    add_form = CustomUserCreationForm
    form = CustomUserChangeForm


admin.site.register(CustomUser, CustomUserAdmin)

My views.py:

from django.urls import reverse_lazy
from django.views import generic

from .forms import CustomUserCreationForm

class SignUp(generic.CreateView):
    form_class = CustomUserCreationForm
    success_url = reverse_lazy('login')
    template_name = 'signup.html'

Upon submission of the signup form get the error message:

OperationalError at /users/signup/
no such table: users_customuser

I've nuked my database and done makemigrations and then migrate from scratch. Something is wrong with my form and perhaps admin, too.

Answer 1

See the Django docs about rewriting the User model: Referencing the User Model

However, if your user model extends AbstractBaseUser, you’ll need to define a custom ModelAdmin class.

In admin.py, you should get the user model from django.contrib.auth:

admin.py:

from django.contrib.auth import get_user_model

Class MyCustomModelAdmin...

CustomUser = get_user_model()

admin.site.register(CustomUser, MyCustomModelAdmin)

EDIT: I think the issue may be with your use of UserCreationForm.

My forms.py:

from django import forms
from .models import CustomUser

class CustomUserCreationForm(UserCreationForm):

class Meta:
    model = CustomUser
    fields = [list fields here]