Ruby Programming Language

9.

Introduction to Ruby on Rails

9.1.

What is Ruby on Rails?

9.1.1.

History and Purpose

9.1.2.

David Heinemeier Hansson

9.1.3.

Web Application Framework

9.1.4.

Convention over Configuration (CoC)

9.1.5.

Don't Repeat Yourself (DRY)

9.1.6.

Rails Philosophy

9.1.6.1.

Programmer Happiness

9.1.6.2.

9.1.6.3.

Opinionated Software

9.2.

The Model-View-Controller (MVC) Architecture

9.2.1.

Overview of MVC

9.2.1.1.

Separation of Concerns

9.2.1.2.

Request-Response Cycle

9.2.2.

Model (Active Record)

9.2.2.1.

9.2.2.2.

Database Abstraction

9.2.2.3.

Database Migrations

9.2.2.4.

9.2.2.5.

9.2.3.

View (Action View)

9.2.3.1.

Embedded Ruby (ERB)

9.2.3.2.

Template Rendering

9.2.3.3.

9.2.3.4.

9.2.4.

Controller (Action Controller)

9.2.4.1.

Routing Requests

9.2.4.2.

Controller Actions

9.2.4.3.

9.2.4.4.

Session Management

9.3.

Core Components of Rails

9.3.1.

Active Record (ORM)

9.3.1.1.

Database Interactions

9.3.1.2.

Query Interface

9.3.1.3.

9.3.2.

Action Pack (Controller and View)

9.3.2.1.

Request Handling

9.3.2.2.

Response Generation

9.3.3.

9.3.3.1.

Email Generation

9.3.3.2.

9.3.4.

9.3.4.1.

Background Processing

9.3.4.2.

9.3.5.

Action Cable (WebSockets)

9.3.5.1.

Real-time Features

9.3.5.2.

WebSocket Connections

9.3.6.

9.3.6.1.

9.3.6.2.

9.3.7.

9.3.7.1.

Core Extensions

9.3.7.2.

Utility Classes

9.4.

Getting Started with a Rails Application

9.4.1.

Creating a New Rails Project (rails new)

9.4.1.1.

Project Generation

9.4.1.2.

Configuration Options

9.4.1.3.

Database Selection

9.4.2.

The Rails Directory Structure

9.4.2.1.

9.4.2.1.1.

9.4.2.1.2.

9.4.2.1.3.

9.4.2.1.4.

9.4.2.1.5.

9.4.2.2.

config Directory

9.4.2.2.1.

Application Configuration

9.4.2.2.2.

9.4.2.2.3.

Database Configuration

9.4.2.3.

9.4.2.3.1.

9.4.2.3.2.

9.4.2.3.3.

9.4.2.4.

public Directory

9.4.2.4.1.

9.4.2.4.2.

9.4.2.5.

test/spec Directory

9.4.2.5.1.

9.4.2.5.2.

Test Configuration

9.4.2.6.

9.4.2.7.

vendor Directory

9.4.3.

Starting the Rails Server

9.4.3.1.

Development Server

9.4.3.2.

Server Configuration

9.4.3.3.

Environment Variables

9.4.4.

The Rails Console

9.4.4.1.

Interactive Environment

9.4.4.2.

Model Interaction

9.4.4.3.

9.4.5.

Generating Scaffolds and Resources

9.4.5.1.

Code Generation

9.4.5.2.

CRUD Operations

9.4.5.3.

9.4.6.

Running Migrations

9.4.6.1.

Database Schema Changes

9.4.6.2.

Migration Commands

9.4.6.3.

9.4.7.

Basic Routing and Controllers

9.4.7.1.

Route Definition

9.4.7.2.

Controller Generation

9.4.7.3.

Action Implementation

9.4.7.4.

Parameter Handling

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8. The Ruby Ecosystem

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1. Introduction to Ruby