Node.js
データベース（MongoDB with Mongoose）

マングース接続

最初にmongodbを実行させてください！ mongod --dbpath data/

package.json

"dependencies": {
    "mongoose": "^4.5.5",
}

server.js（ECMA 6）

import mongoose from 'mongoose';

mongoose.connect('mongodb://localhost:27017/stackoverflow-example');
const db = mongoose.connection;
db.on('error', console.error.bind(console, 'DB connection error!'));

server.js（ECMA 5.1）

var mongoose = require('mongoose');

mongoose.connect('mongodb://localhost:27017/stackoverflow-example');
var db = mongoose.connection;
db.on('error', console.error.bind(console, 'DB connection error!'));

モデル

あなたのモデルを定義してください：

app / models / user.js（ECMA 6）

import mongoose from 'mongoose';

const userSchema = new mongoose.Schema({
    name: String,
    password: String
});

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

export default User;

app / model / user.js（ECMA 5.1）

var mongoose = require('mongoose');

var userSchema = new mongoose.Schema({
    name: String,
    password: String
});

var User = mongoose.model('User', userSchema);

module.exports = User

データを挿入する

ECMA 6：

const user = new User({
   name: 'Stack',
   password: 'Overflow',
   }) ;

user.save((err) => {
    if (err) throw err;

    console.log('User saved!');
});

ECMA5.1：

var user = new User({
   name: 'Stack',
   password: 'Overflow',
   }) ;

user.save(function (err) {
    if (err) throw err;

    console.log('User saved!');
});

データを読み込む

ECMA6：

User.findOne({
    name: 'stack'
}, (err, user) => {
    if (err) throw err;

    if (!user) {
        console.log('No user was found');
    } else {
        console.log('User was found');
    }
});

ECMA5.1：

User.findOne({
    name: 'stack'
}, function (err, user) {
    if (err) throw err;

    if (!user) {
        console.log('No user was found');
    } else {
        console.log('User was found');
    }
});