---
tags: Node.js 直播班 - 2022 春季班
---
# 第四週：期中考：打造全端 (FULL STACK) 網站架構
1. 錄影
2. 點名，[報到]() Code：`lmJjo6c44ji7`
3. 下週二提供**每日助教服務**
4. [Adobe XD 設計稿](https://xd.adobe.com/view/c0763dbe-fc15-42e8-be0b-8956ed03e675-9525/grid)
6. [populate 圖表講解](https://whimsical.com/3CkqgyD3n3GvsCrdkywruw@2Ux7TurymMrP3RNMAaFD)
7. [第三週直播程式碼](https://github.com/gonsakon/express-week3-sample)
8. [廠商報名表單](https://forms.gle/uVjCy3D72nyPCNve9)

## mongoDB 兩種資料設計方式
1. embedded：嵌入
2. references：引用

## embedded 嵌入作法
### room collection

{
    "_id":"6268b81991f46a33636be563",
    "roomName":"標準單人房",
    "users":[
        {"name":"洧杰","age":28},
        {"name":"Ray","age":29}
    ]
}

## references 引用作法
### room collection

{
    "_id":ObjectId("6268b90091f46a33636be58f"),
    "roomName":"標準單人房",
    "users": [
        "6268b89591f46a33636be56a",
        "6268b8b591f46a33636be56b"
    ]
}

### user collection

[
    {
        "_id": ObjectId("6268b89591f46a33636be56a"),
        "name":"洧杰",
        "age":28
    },
    {
        "_id": ObjectId("6268b8b591f46a33636be56b"),
        "name":"Ray",
        "age":29
    }
]

### 引用語法

db.rooms.aggregate( [{
    $lookup: {
        from: 'user',
        localField: 'users',
        foreignField: '_id',
        as: 'users'
    }
}])

## user collections

[
    {
        "name" : "John",
        "email": "[e-mail]",
        "photo": "https://thumb.fakeface.rest/thumb_male_10_8c02e4e9bdc0e103530691acfca605f18caf1766.jpg"
    },
    {
        "name" : "Mary",
        "email": "[e-mail]",
        "photo": "https://thumb.fakeface.rest/thumb_female_30_8ab46617938c195cadf80bc11a96ce906a47c110.jpg"
    },
    {
        "name" : "Ada",
        "email": "[e-mail]",
        "photo": "https://thumb.fakeface.rest/thumb_female_27_5a94a297efb15caf0e3d769ce1694953e8bf33e2.jpg"
    }
]

## user model

:::spoiler schema

const mongoose = require('mongoose');
const userSchema = new mongoose.Schema({
    name: {
      type: String,
      required: [true, '請輸入您的名字']
    },
    email: {
      type: String,
      required: [true, '請輸入您的 Email'],
      unique: true,
      lowercase: true,
      select: false
    },
    photo: String,
  });

const User = mongoose.model('user', userSchema);

module.exports = User;

:::

## 貼文關鍵字搜尋與篩選

const timeSort = req.query.timeSort == "asc" ? "createdAt":"-createdAt"
const q = req.query.q !== undefined ? {"content": new RegExp(req.query.q)} : {};
const post = await Post.find(q).populate({
    path: 'user',
    select: 'name photo '
  }).sort(timeSort);
  // asc 遞增(由小到大，由舊到新) createdAt ; 
  // desc 遞減(由大到小、由新到舊) "-createdAt"

## 第四週主線任務

* [第四週主線任務網址]()