Setup database MongoDB – Step 5

Step 5: – Setup database MongoDB

1. Mongodb.com
   • Login
   • Create cluster
   • Database access
   • Network access
2. Package Commands to install
   • npm i mongoose
3. MongoDB Compass download install
   • Connect with compass

mongodb+srv://shairy:shairy@123@demo.d8fem.mongodb.net/testMongoDB Connect with application

4. Go to Config .env file and paste

MONGO_URI = mongodb+srv://shairy:shairy@123 @demo.d8fem.mongodb.net /portfolio?retryWrites=true&w=majority

5. Create a new file db.js under config

const mongoose = require('mongoose');

const connectDB=async()=>
{
    const conn= await mongoose.connect(process.env.MONGO_URI,{
        useNewUrlParser:true,
        useCreateIndex:true,
        useFindAndModify:false,
        useUnifiedTopology: true 
    });
    console.log(`MongoDB Connected: ${conn.connection.host}`);
};
module.exports = connectDB;

6. Handle unhandled promise Rejection and check mongodb connected or not

const server=app.listen(
    port,
    console.log(`server running in ${process.env.NODE_ENV} mode using port  ${port}`));

process.on('unhandledRejection',(err,promise)=>{
    console.log(`Error: ${err.message}`);
    server.close(()=>process.exit(1));
})