Node.js
Databas (MongoDB med Mongoose)
Sök…
Mongoose-anslutning
Se till att ha mongodb igång först! 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!'));
Modell
Definiera din modell (er):
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
Infoga data
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!');
});
Läs data
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');
}
});
Modified text is an extract of the original Stack Overflow Documentation
Licensierat under CC BY-SA 3.0
Inte anslutet till Stack Overflow