问验证基于类的视图的表单

EN

class ClassSetupView(OrganisorAndLoginRequiredMixin, generic.FormView):
    template_name = "leads/class_setup.html"
    form_class = ClassSetupForm

    def get_success_url(self):
        return reverse("class-setup-sucess-page")
    def form_valid(self, form):
        # Some Other Code
        return super(ClassSetupView, self).form_valid(form)

class ClassSetupForm(forms.Form):
    date = forms.DateField(help_text="Year-01-01",)
    
    clean_date(self):
        date = self.cleaned_data['date']

        if date < datetime.date.today():
            raise ValidationError(_('Invalid date - renewal in past'))

        return date