def active(self):
        return self.filter(status__exact=self.model.ACTIVE)
Given a list of exploration ids, optionally filters the list for
dataset/ETHPy150Open howiworkdaily/django-faq/faq/managers.py/QuestionQuerySet.active--crossover with--dataset/ETHPy150Open oppia/oppia/core/domain/summary_services.py/get_displayable_exp_summary_dicts_matching_ids