尝试保存猫鼬文档时出现DivergentArrayMethod错误

Question

我有这个模式

const topicSchema = new mongoose.Schema({
  topic: {
    type: String,
    required: true
  },
  imageUri: {
    type: String,
    required: true,
    default: "https://picsum.photos100/id/200/100/"
  },
  likes: {
    type: Number,
    default: 0
  },
  likedBy: {
    type: [String]
  },
  comments: {
    type: [String]
  },
  dateCreated: {
    type: Date,
    default: Date.now
  }
});

const PSupportGroup = mongoose.model(
  "PSupportGroup",
  new mongoose.Schema({
    groupName: {
      type: String,
      required: true
    },
    adminName: {
      type: String,
      required: true
    },
    adminImageUri: {
      type: String,
      required: true
    },
    groupDetails: {
      type: String,
      required: true
    },
    dateCreated: {
      type: Date,
      default: Date.now
    },
    topics: [topicSchema]
  })
);

我要像这样更新嵌入文档中的顶赞和顶赞属性：

let groups = await PSupportGroup.findOne(
    { _id: req.params.gid },
    {
      topics: { $elemMatch: { _id: req.params.tid } }
    }
  );

  groups.topics[0].likedBy.push(req.params.id);
  groups.topics[0].likes++;

  groups.save();

尝试保存时出现此错误：

  

'DivergentArrayError：为了您自己的利益，使用'document.save（）'更新使用$ elemMatch投影选择的数组，或者在操作时使用跳过，限制，查询条件或排除_id字段进行填充结果不支持整个数组的$ pop或$ set。以下路径可能会被不安全地修改：'，'topics.0.likes'，'使用Model.update（）来更新这些数组。'

请帮助。