In my django web app i am trying to build a Newspaper app, in my homepage when i click on SIGN UP Button i get an error "ImproperlyConfigured at /accounts/signup/", I didnt figure out where is the problem. forms.py:

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

class CustomUserCreationForm(UserCreationForm): #Creation of CustomUser

    class Meta:
        model = CustomUser
        fields = UserCreationForm.Meta.fields + ("age",) 

class CustomUserChangeForm(UserChangeForm): #Modifying existing users

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

and models.py:

from django.contrib.auth.models import AbstractUser #username, pw1, pw2
from django.db import models

class CustomUser(AbstractUser):
    age = models.PositiveIntegerField(null=True, blank=True)

urls.py:

from django.urls import path
from .views import SignUpView

#Accounts/urls.py : Handles only registrations URLs!!
urlpatterns = [
    path('signup/', SignUpView.as_view(), name='signup'),
]

and views.py:

from django.urls import reverse_lazy
from django.views.generic import CreateView
from .forms import CustomUserCreationForm

class SignUpView(CreateView):
    from_class = CustomUserCreationForm
    success_url = reverse_lazy('login')
    template_name = 'registration/signup.html'

signup.html:

{% extends 'base.html' %}

{% block title %}Sign Up{% endblock title %}

{% block content %}
<h2>Sign Up</h2>
<form method="post">
{% csrf_token %}
{{ form.as_p }}
<button type="submit">Sign Up</button>
</form>
{% endblock content %}

I tried to change fields in forms.py with:

fields = (
            "username",
            "email",
            "age",)

but nothing to be mention

In my django web app i am trying to build a Newspaper app, in my homepage when i click on SIGN UP Button i get an error "ImproperlyConfigured at /accounts/signup/", I didnt figure out where is the problem. forms.py:

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

class CustomUserCreationForm(UserCreationForm): #Creation of CustomUser

    class Meta:
        model = CustomUser
        fields = UserCreationForm.Meta.fields + ("age",) 

class CustomUserChangeForm(UserChangeForm): #Modifying existing users

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

and models.py:

from django.contrib.auth.models import AbstractUser #username, pw1, pw2
from django.db import models

class CustomUser(AbstractUser):
    age = models.PositiveIntegerField(null=True, blank=True)

urls.py:

from django.urls import path
from .views import SignUpView

#Accounts/urls.py : Handles only registrations URLs!!
urlpatterns = [
    path('signup/', SignUpView.as_view(), name='signup'),
]

and views.py:

from django.urls import reverse_lazy
from django.views.generic import CreateView
from .forms import CustomUserCreationForm

class SignUpView(CreateView):
    from_class = CustomUserCreationForm
    success_url = reverse_lazy('login')
    template_name = 'registration/signup.html'

signup.html:

{% extends 'base.html' %}

{% block title %}Sign Up{% endblock title %}

{% block content %}
<h2>Sign Up</h2>
<form method="post">
{% csrf_token %}
{{ form.as_p }}
<button type="submit">Sign Up</button>
</form>
{% endblock content %}

I tried to change fields in forms.py with:

fields = (
            "username",
            "email",
            "age",)

but nothing to be mention

• python
• django

1 Answer 1

The culprit is a typo: from_class to form_class:

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

from .forms import CustomUserCreationForm


class SignUpView(CreateView):
    form_class = CustomUserCreationForm
    success_url = reverse_lazy('login')
    template_name = 'registration/signup.html'

But I think it is interesting to know why this then raises this error: if you don't provide a .form_class ^[Django-doc] to a CreateView, a CreateView will try to make its own form, for that it can work with the modelform_factory(…) ^[Django-doc], but for that it needs to know the model.

It tries to determine the model in three possible ways: first by looking if the view has a .model attribute, if not if it has an .object attribute (for an UpdateView the form can be implied by the object to update), and finally it runs the .get_queryset() method ^[Django-doc] to obtain the model of the QuerySet, and since none of these work with this SignUpView, we thus get that error.