@classmethod
def get_related_models(cls, *models):
    """
        Return list of related model for this one
        """
    related_models = []
    for model in models:
        try:
            for fk in model.foreign_keys:
                if cls.primary_key[0] == fk:
                    related_models.append(model)
        except AttributeError:
            pass
    return related_models
