ตัวอย่าง Code ตอนที่ 10 - Mongoose

app.js

const express = require('express');
const mongoose = require('mongoose');

const options = {
  useNewUrlParser: true,
  useUnifiedTopology: true
};
mongoose.connect('mongodb://localhost:27017/hello-mongoose', options);

const CatModel = mongoose.model(
  'cat',
  new mongoose.Schema(
    { name: String, age: Number },
    { versionKey: false, timestamps: true }
  )
);

// const kitty = new CatModel({
//   name: 'Kitty2222',
//   address: 'sadfasdf',
//   lastname: 'sadfasdf'
// });
// kitty.save().then(() => console.log('meow'));

const app = express();

app.use(express.json());

app.get('/', (req, res) => {
  res.json({ message: 'ok' });
});

// Query
app.get('/cats', (req, res) => {
  CatModel.find({})
    .then((cats) => res.json(cats))
    .catch((error) =>
      res.status(400).json({ message: 'something went wrong!' })
    );
});
app.get('/cats/:id', (req, res) => {
  const { id } = req.params;

  CatModel.findById(id)
    .then((data) => res.json(data || {}))
    .catch((error) => res.status(400).json(error));
});

// Update
app.put('/cats/:id', async (req, res) => {
  const { id } = req.params;
  const { name, age } = req.body;

  const updated = {
    $set: {
      name,
      age
    }
  };

  const cat = await CatModel.findByIdAndUpdate(id, updated, { new: true });
  res.json(cat);
});

app.delete('/cats/:id', async (req, res) => {
  const { id } = req.params;

  await CatModel.findByIdAndDelete(id, {});
  res.json({ message: `${id} already removed` });
});

// Create
app.post('/cats', async (req, res) => {
  const { name, age } = req.body;

  const cat = new CatModel({
    name,
    age
  });

  await cat.save();
  res.json({ message: 'saved!' });
});

app.listen(9999, () => console.log('ok'));