insertMany method in MongoDB - Mini Project: Build & Apply

Using the insertMany Method in MongoDB

📖 Scenario: You are managing a small bookstore's inventory database. You want to add multiple new books to the collection at once to keep the database updated.

🎯 Goal: Learn how to use the insertMany method to add multiple documents to a MongoDB collection in one operation.

📋 What You'll Learn

Create an array of book documents with exact fields and values

Define a variable to hold the array of books

Use the insertMany method on the books collection to add all books

Include an option to acknowledge the write operation

💡 Why This Matters

🌍 Real World

Adding multiple records to a database quickly is common in real-world apps like inventory systems, user management, or content management.

💼 Career

Knowing how to use insertMany is essential for backend developers working with MongoDB to efficiently manage bulk data operations.

1

Create an array of book documents

Create a variable called newBooks and assign it an array containing these exact three book documents:
{ title: "The Great Gatsby", author: "F. Scott Fitzgerald", year: 1925 },
{ title: "1984", author: "George Orwell", year: 1949 },
{ title: "To Kill a Mockingbird", author: "Harper Lee", year: 1960 }.

MongoDB

// Create the array newBooks with three book documents
// Your code here

Need a hint?

Use square brackets [] to create an array and curly braces {} for each book object.

2

Prepare the insertMany options

Create a variable called options and set it to an object with the property ordered set to true to ensure the documents are inserted in order.

MongoDB

const newBooks = [
  { title: "The Great Gatsby", author: "F. Scott Fitzgerald", year: 1925 },
  { title: "1984", author: "George Orwell", year: 1949 },
  { title: "To Kill a Mockingbird", author: "Harper Lee", year: 1960 }
];

// Create the options object with ordered set to true
// Your code here

Need a hint?

Use curly braces {} to create an object and set ordered: true.

3

Use insertMany to add the books

Call the insertMany method on the books collection, passing newBooks and options as arguments.

MongoDB

const newBooks = [
  { title: "The Great Gatsby", author: "F. Scott Fitzgerald", year: 1925 },
  { title: "1984", author: "George Orwell", year: 1949 },
  { title: "To Kill a Mockingbird", author: "Harper Lee", year: 1960 }
];

const options = { ordered: true };

// Use insertMany on books collection with newBooks and options
// Your code here

Need a hint?

Use dot notation to call insertMany on books and pass the two variables.

4

Add a callback to handle the result

Add a callback function as the third argument to insertMany that takes err and result parameters. Inside the callback, check if err exists; if not, access result.insertedCount to know how many documents were inserted.

MongoDB

const newBooks = [
  { title: "The Great Gatsby", author: "F. Scott Fitzgerald", year: 1925 },
  { title: "1984", author: "George Orwell", year: 1949 },
  { title: "To Kill a Mockingbird", author: "Harper Lee", year: 1960 }
];

const options = { ordered: true };

// Add a callback function to insertMany to handle err and result
// Your code here

Need a hint?

Pass a function with parameters err and result as the third argument to insertMany.