Lecture 277:- Populating the DB

here is an example of how to populate a MongoDB database using Mongoose:

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const mongoose = require('mongoose'); const { Contact } = require('./models'); mongoose.connect('mongodb://localhost:27017/contactList', {  useNewUrlParser: true,  useUnifiedTopology: true,  useCreateIndex: true, }); const contacts = [  { name: 'John Doe', phone: '555-1234', email: '[email protected]' },  { name: 'Jane Smith', phone: '555-5678', email: '[email protected]' },  { name: 'Bob Johnson', phone: '555-9012', email: '[email protected]' }, ]; async function seedDatabase() {  try {    await Contact.insertMany(contacts);    console.log('Database seeded successfully!');    mongoose.connection.close();  } catch (error) {    console.error(error);  } } seedDatabase();

In this example, we first require Mongoose and our Contact model. Then, we connect to the MongoDB server running locally on port 27017 and specify some options for the connection.

Next, we define an array of contacts that we want to add to the database. We then create an async function called seedDatabase that uses insertMany to insert the contacts into the database. If the insertion is successful, we log a message to the console and close the database connection. If there is an error, we log the error to the console.

Finally, we call the seedDatabase function to populate the database.