10 examples of 'how to connect mongodb with react js' in JavaScript

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5export default async function connectToMongo(port) {
6 const mongoUrl = `mongodb://localhost:${port}/database`;
7
8 // This prebuilt guy is pretty jankeriffic, we can't await because it doesn't
9 // call the callback when it succeeds
10 denodeify(mongoPrebuilt.start_server.bind(mongoPrebuilt))({
11 args: {
12 port,
13 dbpath: './db',
14 },
15 });
16
17 return await MongoClient.connect(mongoUrl);
18};
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58async connect() {
59 this.client = await MongoClient.connect(this.config.url, this.config.options);
60 this.db = this.client.db(this.config.dbName);
61}
25function connect() {
26 // 连接数据库
27 mongoose.connect(url)
28
29 // 连接错误
30 mongoose.connection.on('error', error => {
31 console.log('数据库连接失败!', error)
32 })
33
34 // 连接成功
35 mongoose.connection.once('open', () => {
36 console.log('数据库连接成功!')
37 // 分页插件配置
38 mongoosePaginate.paginate.options = {
39 limit: config.APP.LIMIT
40 }
41 // 初始化管理员
42 initAdmin()
43 })
44
45 return mongoose
46}
45export async function connect(
46 url: string,
47 dbName: string
48): Promise<MongoDbConnection> {
49 const dbClient = await connectToMongoDb(url, { useNewUrlParser: true });
50 return new PhenylMongoDbConnection({ dbClient, dbName });
51}
16connect() {
17 return new Promise((resolve, reject) => {
18 Mongoose.connect(`mongodb://localhost:${this.port}/${this.dbName}`);
19 Mongoose.connection.on('connected', () => {
20 this.logger(`Connect to database name: ${this.dbName} on port: ${this.port}`);
21 resolve(Mongoose);
22 });
23
24 Mongoose.connection.on('error', (err) => {
25 this.logger(`Mongoose default connection error: ${err}`);
26 reject('Connection failed.');
27 });
28 });
29}
32function connect() {
33 mongoose.connect(
34 dbURI,
35 {
36 useNewUrlParser: true,
37 auto_reconnect: config.get('db.mongoose.auto_reconnect'),
38 },
39 );
40 const db = mongoose.connection;
41
42 db.on('error', onError);
43 db.on('connected', onConnected);
44 db.on('reconnected', onReconnected);
45
46 process.on('SIGINT', onSIGINT);
47}
14function connect () {
15 return MongoClient
16 .connect(process.env.MONGO_URL, { promiseLibrary: Promise })
17 .then(build)
18}
4function _connent(callback) {
5 var url='mongodb://127.0.0.1:27017/test';
6 //connect(url, user, password)
7
8 //连接数据库
9 MongoClient.connect(url, function (err, db) {
10 if (err) {
11 callback(err, null);
12 return;
13 }
14 callback(err, db);
15 });
16}
42function connect() {
43 mongoose
44 .connect(
45 URI,
46 connectOptions
47 )
48 .catch(() => {});
49}
33connect() {
34 return Promise.resolve()
35 .then(() => {
36 this.connections++;
37
38 if(this.db) {
39 return;
40 }
41
42 return MongoClient.connect(this.url)
43 .then(db => {
44 log.debug(`connected to ${ this.url }`);
45 this.db = db;
46 })
47 .catch(err => {
48 log.error(`Failed to connect to ${ this.url } for ${err.message}`);
49 throw new Error(err);
50 });
51 });
52}

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