完整程式碼，請洽: https://github.com/Zrn-code/Node-js-tutorial/tree/node-09

# mongoose

# 安裝 mongoose

npm i mongoose

app.js

	const mongoose = require('mongoose');
	//password 與 dbname 改成自己設置的
	const dbURI = 'mongodb+srv://zrn:<password>@note.ag3er.mongodb.net/<dbname>?retryWrites=true&w=majority';
	mongoose.connect( dbURI ,{useNewUrlParser: true, useUnifiedTopology: true})
	.then((result)=> app.listen(3000))
	.catch((err)=> console.log(err));

blog.js

	// 使用 mongoose
	const mongoose = require('mongoose');
	const Schema = mongoose.Schema;
	const blogSchema = new Schema({
	title: {
	type: String,
	required: true
	},
	snippet: {
	type: String,
	required: true
	},
	body: {
	type: String,
	required: true
	}
	},{ timestamps: true })
	const Blog = mongoose.model('Blog',blogSchema);
	// 將 Blog 資料匯出
	module.exports = Blog;

app.js

	const Blog = require('./models/blog');
	app.get('/add-blog',(req,res)=>{

	const blog = new Blog({
	title: 'new blog',
	snippet: 'about my new blog',
	body: 'more about my new blog'
	});
	blog.save()
	.then((result) => res.send(result))
	.catch((err) => console.log(err));
	});

app.js

	app.get('/all-blogs',(req, res) =>{
	// 尋找資料
	Blog.find()
	.then((result)=> res.send(result)) // 使用資料
	.catch((err)=>(console.log(err)));
	});

app.js

	app.get('/',(req,res)=>{
	res.redirect('/blogs');
	});
	app.get('/blogs',(req,res)=>{
	Blog.find()
	.then((result)=>
	res.render('index',{ title: 'All Blogs', blogs: result}))
	.catch(err)=> console.log(err); // 報錯
	});