Modifying Data through API – Task Management App

This live practical session is your first step into building a real backend. You'll learn how to set up API routes in Express that allow users to modify data in a MongoDB database using Mongoose. You'll also test your APIs using an API client like Postman or Bruno.

Instead of recipes, let’s work on a simpler app: Task Management.

1. Scenario Overview

You're developing the backend for a basic task manager. Users should be able to:

• Add new tasks
• Update existing tasks
• Delete tasks

Each task has the following fields:

• title (String, required)
• completed (Boolean, default: false)

2. Plan Your API Endpoints

Define the routes needed to modify tasks:

Endpoint	Description
POST /tasks	Add a new task
PUT /tasks/:id	Update a task by ID
DELETE /tasks/:id	Delete a task by ID

These routes should follow RESTful conventions.

3. Choose the Right Mongoose Methods

Use the appropriate Mongoose operations to handle data:

Action	Mongoose Method
Create	Task.create()
Update	Task.findByIdAndUpdate()
Delete	Task.findByIdAndDelete()

4. Testing with API Client

Use Postman or Bruno to test your API:

• POST: Send {"title": "Finish assignment"} and expect status 201 Created
• PUT: Update a task's completed status to true, expect status 200 OK
• DELETE: Delete a task and expect status 204 No Content

Make sure the database reflects the changes after each operation.

5. Repository and Setup Instructions

Fork the StackBlitz Project:

• A pre-configured link will be shared
• Fork and work on your own copy

Push to GitHub: You can push manually or use StackBlitz’s GitHub integration.

Manual Push Steps:

git init
git remote add origin <your_repo_url>
git add .
git commit -m "Setup task API endpoints"
git push -u origin main

6. Submission Format

Submit a PDF file with the following:

• GitHub repository link
• Google Drive link to your video demo (ensure sharing is set to kalvium.community)
• A short note (1–2 lines) about your schema or API design

Example PDF Naming Format: task_api_<yourname>.pdf

Example Content:

• GitHub: https://github.com/<your_username>/task_api
• Video: Google Drive link
• Note: “Created API routes for adding, updating, and deleting tasks using Mongoose methods.”