topics.py 文件源码

def delete(self, name):
        topic = None
        if not current_user.is_authenticated:
            return abort(401, message='permission denied')
        for topic in current_user.following_topics:
            if topic.name == name:
                break
        else:
            return abort(400, message='topic not found')
        try:
            current_user.following_topics.remove(topic)
            if topic.followers_count > 0:
                topic.followers_count -= 1
            db.session.commit()
        except:
            db.session.rollback()
            return abort(500, message='operation failed')