class CandidateCreateProfileView(AnonymousRequiredMixin, FormView):
    form_class = CandidateCreateProfileForm
    template_name = 'users/candidate_create_profile.html'
    success_url = reverse_lazy('account_login')

    def dispatch(self, request, *args, **kwargs):
        activation_key = self.kwargs['activation_key']
        self.user = get_object_or_404(User, activation_key=activation_key)

        if self.user.key_expires < timezone.now():
            return render_to_response('users/candidate_confirm_expired.html')
        if self.user.is_active:
            return HttpResponseRedirect(reverse_lazy('account_login'))

        return super(CandidateCreateProfileView, self).dispatch(
            request, *args, **kwargs)

    def get_initial(self):
        initial = super(CandidateCreateProfileView, self).get_initial()
        initial['name'] = self.user.name
        initial['mobile_phone'] = self.user.mobile_phone
        return initial

    def form_valid(self, form):
        self.user.name = form.cleaned_data['name']
        self.user.mobile_phone = form.cleaned_data['mobile_phone']
        self.user.notification_type = form.cleaned_data['notification_type']
        self.user.set_password(form.cleaned_data['password'])
        self.user.is_active = True
        self.user.save()

        return super(CandidateCreateProfileView, self).form_valid(form)

class User(models.Model):
    name = models.CharField(max_length=50)
    ...
    def create_candidate_profile(self, name, mobile_phone, notification_type, password):
        self.name = name
        self.mobile_phone= mobile_phone
        self.notification_type=notification_type
        self.set_password(password)
        self.is_active = True
        self.save()

def form_valid(self, form):
    self.user.create_candidate_profile(
        name = form.cleaned_data['name'],
        mobile_phone = form.cleaned_data['mobile_phone'],
        notification_type = form.cleaned_data['notification_type'],
        password = form.cleaned_data['password']
    )
    return super(CandidateCreateProfileView, self).form_valid(form)

User.create_candidate_profile(
    name, mobile_phone, notification_type, password
)

activation_key = self.kwargs['activation_key']

activation_key = self.kwargs.get('activation_key', 'deafult value')