Imposing Structure to MongoDB by Mongoose Schema

Summary: Imposing structure to MongoDB by Mongoose schema.

Contents:

• 1. Introduction
• 2. Installing Mongoose
• 3. Imposing structure by Mongoose Schema

1. Introduction

MongoDB is a document database, noSQL database, no structure imposed on the document, which is a drawback.

Mongoose Schema can help us impose structure on documents.

📦mongodb
 ┗ 📂data
 📦node-mongoose
 ┣ 📂models
 ┃ ┗ 📜dishes.js
 ┣ 📜index.js
 ┣ 📜package-lock.json
 ┣ 📜package.json
 ┗ 📜yarn.lock

2. Installing Mongoose

• Create a folder named node-mongoose and move into the folder, type npm init to initialize a package.json file.

  package.json

    {
    "name": "node-mongoose-db",
    "version": "1.0.0",
    "description": "",
    "main": "index.js",
    "scripts": {
        "test": "echo \"Error: no test specified\" && exit 1"
    },
    "author": "ycheng",
    "license": "ISC",
    "dependencies": {
        "mongoose": "5.1.7"
    }
    }
  

• Install Mongoose by typing the following at the prompt:

  npm install mongoose@5.1.7 --save

  or

  yarn add mongoose@5.1.7

3. Imposing structure by Mongoose Schema

• Create a sub-folder models, in the sub-folder, create dishes.js,

  dishes.js

    const mongoose = require('mongoose');
    const Schema = mongoose.Schema;
  
    const dishSchema = new Schema({
        name: {
            type: String,
            required: true,
            unique: true
        },
        description: {
            type: String,
            required: true
        }
    },{
        timestamps: true
    });
  
    var Dishes = mongoose.model('Dish', dishSchema);
  
    module.exports = Dishes;
  

  index.js

    const mongoose = require('mongoose');
    const Schema = mongoose.Schema;
  
    const dishSchema = new Schema({
        name: {
            type: String,
            required: true,
            unique: true
        },
        description: {
            type: String,
            required: true
        }
    },{
        timestamps: true
    });
  
    var Dishes = mongoose.model('Dish', dishSchema);
  
    module.exports = Dishes;