'Adding an auto_now_add field to a model.'

def ask_auto_now_add_addition(self, field_name, model_name):

    if (not self.dry_run):
        choice = self._choice_input("You    are    trying    to    add    the    field    '{}'    with    'auto_now_add=True'    to    {}    without    a    default;    the    database    needs    something    to    populate    existing    rows.\n".format(field_name, model_name), ['Provide    a    one-off    default    now    (will    be    set    on    all    existing    rows)', 'Quit,    and    let    me    add    a    default    in    models.py'])
        if (choice == 2):
            sys.exit(3)
        else:
            return self._ask_default(default='timezone.now')
    return None
