def signup(request):
    if request.method == 'POST':
        try:
            first_name = request.POST['fn']
            last_name = request.POST['ln']
            email = request.POST['email']
            password = request.POST['password']

            user = CustomUser.objects.create_user(email, first_name, last_name, password)
            user = authenticate(username=email, password=password)
            if user is not None:
                if user.is_active:
                    login(request, user)
                    return HttpResponseRedirect('/home/')
                else:
                    return HttpResponseRedirect('/welcome/')

            return HttpResponseRedirect('/welcome/')

        except KeyError:
            return HttpResponseRedirect('/welcome/')

    else:
        return HttpResponseNotAllowed(['POST'])