def form_valid(self, form):
first_name = form.cleaned_data['first_name']
last_name = form.cleaned_data['last_name']
email = form.cleaned_data['email']
if Subscription.objects.filter(email=email).count()==0:
subscription = Subscription(
first_name=first_name,
last_name=last_name,
email=email,
)
subscription.save()
return super(Nosotros, self).form_valid(form)
