def save_many(self, models, joinings=None):
        if joinings is None:
            joinings = {}

        for key, model in enumerate(models):
            self.save(model, joinings.get(key), False)

        self.touch_if_touching()

        return models
Save a list of new models and attach them to the parent model
dataset/ETHPy150Open sdispater/orator/orator/orm/relations/belongs_to_many.py/BelongsToMany.save_many