從一個集合訪問數據到另一個 MongoDB

Question

我在 nodejs 服務器上創建了這個用戶 model：

const mongoose = require ('mongoose')
const user = new mongoose.Schema({
id:{
    type: String,
    required: true,
    unique: true,
},
name:{
    type: String,
    required: true,
},
email:{
    type: String,
    required: true,
    unique: true,
},
pass:{
    type: String,
    required: true
},
company:{
    type: String,
},
});
const User = mongoose.model("user", user)
module.exports = User

我有這個工作model，它有一個像“外鍵”這樣的用戶字段並包含用戶_id：

const job = new mongoose.Schema({
jobtitle :{
    type: String,
    required: true,
},
salary:{
    type: String,
    required: true,
},
jobemail:{
    type: String,
    required: true,
},
schedule:{
    type: String,
    required: true
},
user:{
    type: mongoose.Schema.Types.ObjectId,
    ref: "User",
    unique: true,
    required: true
    },
    });
const Job = mongoose.model("job", job)
module.exports = Job

那么如何通過作業集合中的字段用戶訪問用戶名呢？

Answer 1

您可以填充Job model，然后使用以下命令檢索user屬性：

const job = await Job.findOne({}).populate('user').exec();
console.log(job.user.name);