如何在两个集合之间建立关系？

Question

我有两个猫鼬模型：user.js 和 note.js，还有两个集合 notes 和 users。用户将能够保存他们的笔记。我不知道如何在集合之间建立关系。我希望能够识别笔记和创建笔记的用户，我应该怎么做？

const userSchema = new Schema(
  {
    username: {
      type: String,
      required: [true, "Please enter a username"],
      unique: true,
    },
    password: {
      type: String,
      required: [true, "Please enter a password"],
      minLength: [8, "The minimum password length is 8"],
    },
  },
  { timestamps: true }
);

note.js

const noteSchema = new Schema({
  title: {
    type: String,
  },
  text: {
    type: String,
  },
});

Answer 1

你可以使用猫鼬种群

https://mongoosejs.com/docs/populate.html