Practical Session: API Development

This hands-on session focuses on applying concepts from previous modules to

build a complete Express.js API for a task management application. We'll focus

on best practices, real-world patterns, and troubleshooting common issues.

• •Create a RESTful API for managing tasks
• •Implement user authentication
• •Add task filtering and sorting capabilities
• •Create proper error handling
• •Implement validation
• •Document the API
• •Set up automated testing

• 1.Register a User
• •POST /api/auth/register
• •Body: { "name": "Test User", "email": "test@example.com", "password":

• 2.Login
• •POST /api/auth/login
• •Body: { "email": "test@example.com", "password": "123456" }
• 3.Create a Task
• •POST /api/tasks
• •Headers: Authorization: Bearer {your_token}
• •Body: { "title": "Task 1", "description": "Test task", "priority": "high" }
• 4.Get All Tasks
• •GET /api/tasks
• •Headers: Authorization: Bearer {your_token}
• 5.Filter and Sort Tasks
• •GET /api/tasks?status=pending&priority=high&sort=dueDate
• •Headers: Authorization: Bearer {your_token}

• 1.Add the ability to assign tasks to other users
• 2.Implement task categories or tags
• 3.Add the ability to search tasks by title or description
• 4.Create an endpoint to get task statistics (counts by status/priority)
• 5.Add pagination and filtering to the tasks endpoint
• 6.Implement task comments functionality

A screenshot of Postman showing a successful API call to one of the task

endpoints with the proper authentication headers and response.

• •[Building a RESTful API with Express.js](https://www.freecodecamp.org/news/build-a-restful-api-using-node-express-and-mongodb/)
• •[Comprehensive Guide to Express.js Validation](https://express-validator.github.io/docs/)
• •[Securing Node.js RESTful APIs with JWT](https://medium.com/swlh/securing-node-js-restful-apis-with-json-web-tokens-bcbf025efeb8)
• •[Practical MongoDB Query Examples](https://www.mongodb.com/docs/manual/reference/method/db.collection.find/)