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MERN Full Stack Development

Computer Science

Chapter 5 — Express.js and REST APIs

Progress: 46%

Lesson 5.4 : Express Controllers

Reading & Interactive Lesson

Lesson 5.4 FREE

Express Controllers

Reading Material & Notes

Express Controllers

Controllers contain application logic associated with API requests.

Example

const getUsers = async (req, res) => {
    const users = [];
    res.json(users);
};

Separating controllers from routes helps keep large applications organized.

Course Curriculum

10 Chapters • 50 Lessons

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Chapter 4 — Node.js Fundamentals

5 Lessons

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Lesson 4.1 : What is Node.js?
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Lesson 4.2 : Node.js Modules
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Lesson 4.3 : npm and Package Management
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Lesson 4.4 : Node.js HTTP Server
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Lesson 4.5 : Node.js Environment Variables
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Chapter 5 — Express.js and REST APIs

5 Lessons

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Lesson 5.1 : Introduction to Express.js
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Lesson 5.2 : Express Routes
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Lesson 5.3 : Express Middleware
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Lesson 5.4 : Express Controllers
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Lesson 5.5 : Express Error Handling
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Chapter 6 — MongoDB and Mongoose

5 Lessons

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Lesson 6.1 : Introduction to MongoDB
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Lesson 6.2 : MongoDB Collections and Documents
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Lesson 6.3 : Installing and Connecting Mongoose
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Lesson 6.4 : Mongoose Schemas and Models
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Lesson 6.5 : MongoDB CRUD Operations
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Chapter 7 — Authentication and Authorization

5 Lessons

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Lesson 7.1 : What is a REST API?
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Lesson 7.2 : Creating a User API
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Lesson 7.3 : API Request and Response
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Lesson 7.4 : API Validation
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Lesson 7.5 : API Testing
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Chapter 8 — Frontend and Backend Integration

5 Lessons

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Lesson 8.1 : Authentication vs Authorization
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Lesson 8.2 : User Registration API
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Lesson 8.3 : Password Hashing
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Lesson 8.4 : JWT Authentication
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Lesson 8.5 : Role-Based Authorization
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Chapter 9 — Advanced MERN Development

5 Lessons

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Lesson 9.1 : Connecting React with Express
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Lesson 9.2 : Connecting Express with MongoDB
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Lesson 9.3 : Building a Complete CRUD Module
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Lesson 9.4 : Frontend and Backend Error Handling
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Lesson 9.5 : MERN Application Security Basics
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Chapter 10 — MERN Full Stack Project and Deployment

5 Lessons

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Lesson 10.1 : Planning a MERN Full Stack Project
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Lesson 10.2 : Building a MERN Admin Panel
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Lesson 10.3 : Testing a MERN Application
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Lesson 10.4 : Building the Production Version
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Lesson 10.5 : Deploying a MERN Full Stack Application
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MERN Full Stack Development

Chapters

10

Lessons

50

View Course Details