Creating CRUD-Book Store

Introduction

In this blog post, we’ll walk through the creation of a simple Book Store Backend using Express.js. This project allows users to add books to a collection, each identified by a unique index number. We’ll explore the setup, routes, and how to test the API using Postman.

Project Overview

The Book Store Backend is built with Express.js, a minimal and flexible Node.js web application framework. The server handles a few routes to manage a collection of books, where each book is represented by a title and an author. The index number acts as a unique identifier for each book.

Setting Up the Project

1. Initialize the Project: Start by creating a new directory for your project and initializing it with npm:

    mkdir book-store-backend
    cd book-store-backend
    npm init -y
   

2. Install Dependencies: Install Express.js:

    npm install express
   

3. Create the Server: Create a file named server.js and set up a basic Express server:

   JavaScript

    const express = require('express');
    const app = express();
    const port = 3000;
   
    app.use(express.json());
   
    app.listen(port, () => {
      console.log(`Server is running on http://localhost:${port}`);
    });
   

   AI-generated code. Review and use carefully. More info on FAQ.

Defining Routes

1. Book Collection: We’ll use an array to store our books:

   JavaScript

    let books = [];
    let index = 0;
   

   AI-generated code. Review and use carefully. More info on FAQ.

2. Add a Book: Create a route to add a new book:

   JavaScript

    app.post('/books', (req, res) => {
      const { title, author } = req.body;
      const book = { id: index++, title, author };
      books.push(book);
      res.status(201).json(book);
    });
   

   AI-generated code. Review and use carefully. More info on FAQ.

3. Get All Books: Create a route to retrieve all books:

   JavaScript

    app.get('/books', (req, res) => {
      res.json(books);
    });
   

   AI-generated code. Review and use carefully. More info on FAQ.

4. Get a Book by ID: Create a route to retrieve a book by its ID:

   JavaScript

    app.get('/books/:id', (req, res) => {
      const book = books.find(b => b.id === parseInt(req.params.id));
      if (book) {
        res.json(book);
      } else {
        res.status(404).send('Book not found');
      }
    });
   

   AI-generated code. Review and use carefully. More info on FAQ.

5. Update a Book: Create a route to update a book by its ID:

   JavaScript

    app.put('/books/:id', (req, res) => {
      const book = books.find(b => b.id === parseInt(req.params.id));
      if (book) {
        book.title = req.body.title;
        book.author = req.body.author;
        res.json(book);
      } else {
        res.status(404).send('Book not found');
      }
    });
   

   AI-generated code. Review and use carefully. More info on FAQ.

6. Delete a Book: Create a route to delete a book by its ID:

   JavaScript

    app.delete('/book/:id', (req, res) => {
        const bookndex = books.findIndex(b => b.id === parseInt(req.params.id))
        if(bookIndex === -1) {
            res.status(404).send('Book not found')
        }
        books.splice(bookIndex, 1)
        res.status(204).send()
    })
   

   AI-generated code. Review and use carefully. More info on FAQ.

Testing the API with Postman

To test the API, you can use Postman to send HTTP requests to the server:

1. Add a Book:

   • Method: POST

   • URL: http://localhost:3000/books

   • Body: JSONJSON

       {
         "title": "The Great Gatsby",
         "author": "F. Scott Fitzgerald"
       }
     

     AI-generated code. Review and use carefully. More info on FAQ.

2. Get All Books:

   • Method: GET

   • URL: http://localhost:3000/books

3. Get a Book by ID:

   • Method: GET

   • URL: http://localhost:3000/books/0

4. Update a Book:

   • Method: PUT

   • URL: http://localhost:3000/books/0

   • Body: JSONJSON

       {
         "title": "The Great Gatsby",
         "author": "Fitzgerald"
       }
     

     AI-generated code. Review and use carefully. More info on FAQ.

5. Delete a Book:

   • Method: DELETE

   • URL: http://localhost:3000/books/0

Conclusion

This simple Book Store Backend project demonstrates how to set up an Express.js server with basic CRUD operations. By following this guide, you can expand the project further by adding more features such as user authentication, database integration, and more.

Feel free to check out the GitHub repository for the complete code and contribute to the project.

Link to GitHub Repo

Happy coding!