在Mongoose上填充架构

Question

我有两个收藏，一个是用户，另一个是猫。我想要猫的数据下我的用户集合。但我没有得到。

user.js

var Schema = mongoose.Schema;
var userSchema = Schema({
_id: Schema.Types.ObjectId,
username: String,
email: { type: String, unique: true, lowercase: true, trim: true },
password: String,
role: String,
cats: [{ type: Schema.ObjectId, ref: 'Cat' }]
});
var User = mongoose.model('User', userSchema);
exports.default = User;

var mongoose = require("mongoose");
var Schema = mongoose.Schema;
var catSchema = Schema({
fname: String,
mname: String,
lname: String,
});
var Cat = mongoose.model('Cat', catSchema);
exports.default = Cat;

Answer 1

您可以将它们组合成一个模式，如下所示。没有任何理由单独创建模式，除非数组计数连续增加数百个。

var Schema = mongoose.Schema;
var userSchema = Schema({
  _id: Schema.Types.ObjectId,
  username: String,
  email: { type: String, unique: true, lowercase: true, trim: true },
  password: String,
  role: String,
  cats: [
    { 
      _id: Schema.Types.ObjectId,
      fname: String,
      mname: String,
      lname: String,
    }
  ]
});
var User = mongoose.model('User', userSchema);
exports.default = User;