[英]Error when connecting to MongoDB node.js - client is not defined
我似乎無法連接到我的 MongoDB。 這是發生的錯誤:
ReferenceError: 客戶端未定義。 在 MongoClient.connect ( C:/user/User/desktop/blog app.js at args.push
const express = require('express');
const bodyParser= require('body-parser')
const app = express()
app.use(bodyParser.urlencoded({extended: true}))
const MongoClient = require('mongodb').MongoClient
var db
MongoClient.connect('mongodb://user:pass@ds029466.mlab.com:29466/movie-quotes', (err, database) => {
// ... start the server
if (err) return console.log(err)
db = client.db('movie-quotes')
app.listen(process.env.PORT || 3000, () => {
console.log('listening on 3000')
})
})
app.get('/', (req, res) => {
res.sendFile(__dirname + '/index.html')
// Note: __dirname is directory that contains the JavaScript source code. Try logging it and see what you get!
// Mine was '/Users/zellwk/Projects/demo-repos/crud-express-mongo' for this app.
})
app.post('/quotes', (req, res) => {
db.collection('quotes').save(req.body, (err, result) => {
if (err) return console.log(err)
console.log('saved to database')
res.redirect('/')
})
})
database
是您的數據庫客戶端。 你應該使用:
db = database.db('movie-quotes')
而不是:
db = client.db('movie-quotes')
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