code: def form_valid(self, form):
          
          instance = form.save(commit=False)
          if hasattr(self.request, 'user'):
              instance.user = self.request.user
          if settings.CONTACT_FORM_FILTER_MESSAGE:
              instance.message = bleach.clean(
                  instance.message,
                  tags=settings.CONTACT_FORM_ALLOWED_MESSAGE_TAGS,
                  strip=settings.CONTACT_FORM_STRIP_MESSAGE
              )
          instance.ip = get_user_ip(self.request)
          instance.site = self.site
          instance.save()
          if settings.CONTACT_FORM_USE_SIGNALS:
              contact_form_valid.send(
                  sender=self,
                  event=self.valid_event,
                  ip=instance.ip,
                  site=self.site,
                  sender_name=instance.sender_name,
                  sender_email=instance.sender_email,
                  email=instance.subject.department.email,
                  subject=instance.subject.title,
                  message=instance.message
              )
  
          return super(ContactFormView, self).form_valid(form)
docs: This is what's called when the form is valid.