How to update only changed fields in django?

Question

Django

There is a form, the fields are optional, upon receipt on the server, I check whether there is a record with such an id or not, if it exists, I pass initial and the current form, then I check change_data and supplement the existing model using them (if the fields != '' or None) .

try:
                current_user = Passport.objects.get(id=current_id)
                f = PassportForm(request.POST, request.FILES, initial=model_to_dict(current_user))

                if f.has_changed():

                    for i in f.changed_data:
                        if (f.data[i] != '') and (f.data[i] != None):
                            current_user.i = f.data[i]
                            current_user.__setattr__(i, f.data[i])

                    current_user.save()

The method seems a little crutch to me, the more the problem arises when a file is transferred and it needs to be updated, is it possible to somehow implement this using django?

Answer 1

save(update_fields=['field'])

Answer 2

https://docs.djangoproject.com/en/1.11/ref/models/...