Learn RUBY-ON-RAILS with Real Code Examples

Rails follows the MVC (Model-View-Controller) architecture for clean separation of concerns.

It includes built-in tools for database migrations, routing, templating, and testing.

Rails promotes convention over configuration, reducing boilerplate code.

Supports RESTful design patterns by default.

Used for rapid development of web applications, APIs, and scalable enterprise platforms.

Active Record for database interactions

Action Pack for controllers and views

Action Mailer for sending emails

Routing system for RESTful resources

Built-in support for caching, sessions, and security

Models - represent data and business logic

Controllers - handle requests and responses

Views - templates for HTML rendering

Routes - map URLs to controller actions

Migrations - manage database schema changes

app/models - database models

app/controllers - controllers for request handling

app/views - templates for rendering

config/routes.rb - route definitions

db/migrate - database migrations

Generate Rails app using `rails new`

Define models, controllers, and views

Set up routes and RESTful resources

Run migrations and seed database

Test app and run development server

Beginner: static web page with basic CRUD

Intermediate: API with authentication and database

Advanced: E-commerce or SaaS platform

Expert: Scalable enterprise application with microservices

Architect: Integrate Rails with front-end frameworks and background jobs

Rails vs Django: both full-stack, Rails is convention-heavy, Django more explicit

Rails vs Flask: Rails is full-stack, Flask is micro-framework

Rails vs FastAPI: Rails sync-first, full-stack; FastAPI async-first API-focused

Rails vs Express.js: Rails full-stack Ruby framework; Express minimalist Node.js framework

Rails vs Phoenix: Rails uses Ruby, Phoenix uses Elixir and offers concurrency advantages

2004 – Initial release of Rails

2005–2010 – RESTful routing, scaffolding, and Active Record enhancements

2011–2015 – Asset pipeline, Turbolinks, and strong_parameters

2016–2020 – Rails 5/6, Action Cable for WebSockets, API mode

2021–2025 – Rails 7, Hotwire/Turbo, improved async support

MVC - Model-View-Controller design pattern

Active Record - ORM for database interaction

Routes - URL patterns mapped to controller actions

Views - templates for HTML rendering

Migrations - scripts to manage database schema