How to automatically login a user after registration in django

Question

This is what I am currently using for registration:

def register(request):
    if request.method == \'POST\':
        form = UserCreationForm(request.POST)
          


        

Answer 1

You can subclass Django's UserCreationForm and override it's save method to log them in when commit=True.

forms.py

from django.contrib.auth.forms import UserCreationForm
from django.contrib.auth import login

class CustomUserCreationForm(UserCreationForm):
    """
    A ModelForm for creating a User and logging 
    them in after commiting a save of the form.
    """

    def __init__(self, request, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.request = request

    class Meta(UserCreationForm.Meta):
        pass

    def save(self, commit=True):
        user = super().save(commit=commit)
        if commit:
            auth_user = authenticate(
                username=self.cleaned_data['username'], 
                password=self.cleaned_data['password1']
            )
            login(self.request, auth_user)

        return user

You just need to make sure you pass in a request object when you instantiate the form. You can do that by overriding the view's get_form_kwargs method.

views.py

def get_form_kwargs(self):
    form_kwargs = super().get_form_kwargs()
    form_kwargs['request'] = self.request
    return form_kwargs

Or, make sure when you instantiate a form_class you do CustomUserCreationForm(data=request.POST, request=self.request).