How to force-save an “empty”/unchanged django admin inline?

Question

I have some inlines in one of my admin models which have default values which likely won\'t need to be changed when adding a new instance with "Add another ...". U

Answer 1

@daniel answer is great, however it will try to save the instance that is already created ever if no changes is made, which is not necessary, better to use it like:

class AlwaysChangedModelForm(ModelForm):
    def has_changed(self, *args, **kwargs):
        if self.instance.pk is None:
            return True
        return super(AlwaysChangedModelForm, self).has_changed(*args, **kwargs)