Ruby on Rails (Rails) is a server-side web
application framework written in Ruby. It follows the
Model-View-Controller (MVC) architectural pattern and emphasizes
convention over configuration, making web development faster and
more efficient.
Key Features
- Convention over Configuration: Reduces decision-making and setup time
- DRY Principle: Don't Repeat Yourself philosophy
- MVC Architecture: Clean separation of concerns
- Active Record: Built-in ORM for database operations
- RESTful Design: Follows REST architectural principles
Basic Rails Application
# Create new Rails application
rails new my_app
cd my_app
# Generate a controller
rails generate controller Welcome index
# Routes (config/routes.rb)
Rails.application.routes.draw do
root 'welcome#index'
resources :articles
end
# Controller (app/controllers/welcome_controller.rb)
class WelcomeController < ApplicationController
def index
@message = "Welcome to Rails!"
end
end
# Model example
class Article < ApplicationRecord
validates :title, presence: true
validates :content, presence: true
end
Common Use Cases
- Web Applications: Full-featured web applications
- APIs: RESTful web services and APIs
- E-commerce: Online stores and marketplaces
- Content Management: CMS and blogging platforms
- Social Platforms: Social networking applications
Career Impact
K
Average Salary
50K+
GitHub Stars
25K+
Job Openings
Learning Path
- Learn Ruby programming language fundamentals
- Understand MVC architecture and Rails conventions
- Master Active Record and database operations
- Learn routing, controllers, and views
- Explore testing with RSpec and Minitest
- Build and deploy real-world applications