Question

我的用户架构中有一个通知对象数组。我想让每条通知在x时间后过期。那可能吗？我遵循的其他答案给了我错误。

我尝试添加createdAt: {type: Date, default: Date.now, expires: 7200} 到我的用户架构和通知推送数组。 “类型：日期”似乎是在破坏它。

const UserSchema = mongoose.Schema({
  name: {
    type: String,
    required: true
  },
  uuid: {
    type: String,
    required: true
  },
  keep: {
    type: String
  },
  notifications: [{notifcationType: String, date: String, user: String, _id: false, createdAt: {type: Date, default: Date.now, expires: 7200} }],
  followers: [{user: String, date: String, _id: false}],
  following: [{user: String, date: String, _id: false}]
});

const User = module.exports = mongoose.model('User', UserSchema);

//my function to push notifications that a user followed. Works without the createdAt object

module.exports.addFollowNotify = (id, user, options, callback) => {
  const query = {username: user.following}
    let update = {
    $push: {notifications: {user: user.username, date: user.date, notifcationType: "Follow", createdAt: {type: Date, default: Date.now, expires: 7200} }}
    };
    User.findOneAndUpdate(query, update, options, callback);
};

Answer 1

您应该必须创建“通知”的新集合并参考userid创建新的通知。这样，您可以阅读用户的通知，通知将根据到期时间删除。

猫鼬在对象数组内过期

1 个答案: