如何在 Typescript 上进行猫鼬模型自引用？

Question

我有一个模型：

const comment = new mongoose.Schema({
  id: { type: ObjectId, required: true },
  comment: { type: String },
  replies: [comment]
});

想要创建这样的文档：

{
  "id": 1,
  "comment": "Grand Parent Comment",
  "replies": [
    {
      "id": 11,
      "comment": "Parent Comment",
      "replies": [
        {
          "id": 111,
          "comment": "Comment",
          "replies": [
            {
              "id": 1111,
              "comment": "Child Comment",
              "replies": []
            }
          ]
        },
        {
          "id": 112,
          "comment": "Sibling Comment",
          "replies": []
        }
      ]
    }
  ]
}

根据这个答案的回答

this只需作为模型的参考即可解决。

{
  "id": 1,
  "comment": "Grand Parent Comment",
  "replies": [
    {
      "id": 11,
      "comment": "Parent Comment",
      "replies": [
        {
          "id": 111,
          "comment": "Comment",
          "replies": [
            {
              "id": 1111,
              "comment": "Child Comment",
              "replies": []
            }
          ]
        },
        {
          "id": 112,
          "comment": "Sibling Comment",
          "replies": []
        }
      ]
    }
  ]
}

当我尝试使用 Typescript 时，会出现如下错误：

“this”隐式具有“any”类型，因为它没有类型注释。

使用猫鼬在打字稿上书写进行自我引用建模的任何最佳实践。

Answer 1

您可以尝试使用以下方法分两步执行此操作add：

const schema = new mongoose.Schema({
  body: String,
});

schema.add({
 children: [schema]
});