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Node.js CRUD App

Building a CRUD App

Node.js CRUD app with MongoDB handles create read update delete.

Introduction to CRUD Operations

CRUD stands for Create, Read, Update, and Delete. These are the four basic operations that can be performed on any data source. In a Node.js application, these operations can be executed using various database systems, such as MongoDB.

In this tutorial, we will build a simple Node.js application that demonstrates CRUD functionality using MongoDB as the database.

Setting Up Your Environment

Before we start, ensure you have Node.js and MongoDB installed on your machine. You can download Node.js from the official website and MongoDB from MongoDB's official site.

Once installed, set up a new Node.js project by running the following command in your terminal:

Next, we need to install the necessary dependencies, including Express for building the server and Mongoose for interacting with MongoDB:

Connecting to MongoDB

Create a file named db.js to handle the connection to your MongoDB database. Replace <your_mongodb_connection_string> with your actual MongoDB connection string:

Defining a Mongoose Model

Define a Mongoose model for the data you want to manage. As an example, we'll create a simple model for a collection of "Books":

Implementing CRUD Operations

Let's implement the CRUD operations using Express routes. Create a file named app.js and import the necessary modules:

Create Operation

To add a new book to the database, use the POST method:

Read Operation

To retrieve all books, use the GET method:

Update Operation

To update an existing book's details, use the PATCH method with the book ID:

Delete Operation

To delete a book from the database, use the DELETE method with the book ID:

Running the Application

To run your Node.js CRUD application, add the following code to your app.js to start the server:

Now, start your application using the command:

Your Node.js CRUD application is now running, and you can interact with it using tools like Postman to test each endpoint.

This concludes our tutorial on setting up a Node.js CRUD application with MongoDB. Feel free to expand the application by adding more features or exploring other aspects of Node.js and MongoDB.

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