Ruby

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Last Update	09/18/2026
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Section 6: Working with Data and Files

4Lessons ·
- 24: Regular Expressions in Ruby
  
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Section 7: Ruby Frameworks Overview

3Lessons ·
- 26: Overview of Rails vs Sinatra
  
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- 27: ActiveRecord Basics
  
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- 28: Rack Middleware Concepts
  
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Section 8: Ecosystem and Testing

3Lessons ·
- 29: Managing Gems with Bundler
  
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Section 9: Practical Projects

5Lessons ·
- 34: Building a Basic Sinatra Web App
  
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Section 16: Enumerable and Comparable Modules In Depth

5Lessons ·
- 58: The Enumerable Module Methods: map, select, reduce
  
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- 59: each_with_object and each_slice
  
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Section 18: Ruby Standard Library: Data and Security

5Lessons ·
- 71: Base64 Encoding and Decoding
  
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Section 19: Ruby Standard Library: CLI and Text

4Lessons ·
- 77: Shellwords for Safe Shell Escaping
  
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Section 21: Ruby on Rails Deep Dive

8Lessons ·
- 84: Rails Routing In Depth
  
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- 86: Rails Migrations In Depth
  
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Section 30: Rails API Development

4Lessons ·
- 123: Building a JSON API with Rails
  
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- 124: API Versioning in Rails
  
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- 126: Rate Limiting with Rack::Attack
  
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Section 31: Rails Authentication and Authorization

4Lessons ·
- 127: Devise for Authentication
  
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- 130: OmniAuth for Social Login
  
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Section 35: Sinatra and Lightweight Ruby Web Apps

3Lessons ·
- 144: Sinatra Middleware and Extensions
  
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- 145: Choosing Between Rails, Sinatra, and Hanami
  
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Section 36: More Ruby Language Deep Dive

5Lessons ·
- 146: Frozen String Literals and Immutability
  
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Section 39: More Practical Projects

5Lessons ·
- 161: Building a Blog Engine with Rails
  
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- 162: Building a Simple Task Management API
  
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- 164: Building a Subscription Billing System with Stripe
  
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- 165: Building a Multi-Tenant SaaS with Rails
  
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Section 42: Final Practice and Mastery

5Lessons ·
- 177: Practice Exercise: Building a Simple Webhook Delivery System
  
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Section 45: Ruby GraphQL

3Lessons ·
- 187: Building a GraphQL API with graphql-ruby
  
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Section 47: Ruby Hanami Framework Overview

3Lessons ·
- 195: Hanami Architecture Philosophy
  
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Section 50: Ruby Search Integration

3Lessons ·
- 208: Full-Text Search with pg_search
  
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Section 51: Ruby File Upload and Media

4Lessons ·
- 211: Image Processing with MiniMagick
  
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- 212: Direct Uploads to S3
  
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Section 52: Ruby Email and Notifications

4Lessons ·
- 214: Action Mailer In Depth
  
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- 216: Email Testing with letter_opener
  
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- 217: Push Notifications from a Ruby Backend
  
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Section 53: Ruby Admin Panels

4Lessons ·
- 218: Building an Admin Panel with ActiveAdmin
  
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- 220: Role-Based Access Control for Admin Panels
  
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- 221: Building Custom Admin Dashboards with Charts
  
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Section 54: Ruby Feature Flags and Experimentation

4Lessons ·
- 223: A/B Testing Infrastructure in Rails
  
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Section 56: Ruby Docker and Deployment Deep Dive

4Lessons ·
- 231: Dockerizing a Rails Application
  
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Section 59: More Final Projects

6Lessons ·
- 248: Building a Social Bookmarking Service
  
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- 249: Building a Recipe Sharing Platform API
  
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- 250: Building a Simple Event Ticketing System
  
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