SupeRails Blog - Ruby on Rails Tips & Tutorials
Ruby on Rails tips and tricks
340 posts and counting.
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Self-hosted inbound email for Rails: Postfix, Rspamd and Action Mailbox on Kamal
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Rails World 2026: The RubyGems Compact Index: What Powers Every `bundle install` (Jenny Shen)
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Rails World 2026: every talk, summarized
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Rails World 2026: Shipping is your heartbeat: Rails in the agentic era (Ryan Sherlock)
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Rails World 2026: Sharding Is Hard: Let's Make It Easier! (Tess Griffin)
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Rails World 2026: Ruby, Rails, and the future of programming (Matz, DHH and Jeremy Daer)
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Rails World 2026: Ractors, Rails, and Robots: Automating the Path to Ractor-safety (Andrew Novoselac)
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Rails World 2026: Practical Hotwire: Stimulus and Turbo on the Ground (Jeremy Smith)
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Rails World 2026: Opening keynote (DHH)
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Rails World 2026: Lexxy: a new text editor for Action Text (Jorge Manrubia)
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Rails World 2026: How a Designer started shipping production Rails (Alicia Rojas and Arely Rivera)
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Rails World 2026: The Most Valuable Engineer Isn't Shipping Features (Robby Russell)
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Rails World 2026: Kamal Deep Dive (Josef Strzibny)
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Rails World 2026: I Didn't Get MCP, So I Built My Way Through It (Enrique Mogollan)
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Rails World 2026: Hot Cell: Securing Active Storage in the age of AI (Mike Dalessio)
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Rails World 2026: Herb in Rails 8.2: Your ERB views, now HTML-aware (Marco Roth)
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Rails World 2026: Harness Engineering on Rails (Joël Quenneville)
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Rails World 2026: From Prompt to Rails: An Online Rails App Generator (Paweł Strzałkowski)
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Rails World 2026: Durable orchestration on Rails: from continuation to workflow (Vladimir Dementyev)
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Rails World 2026: Distributing Rails applications with ONCE (Kevin McConnell)
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Rails World 2026: Custom Rails Generators in RubyEvents (Rachael Wright-Munn)
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Rails World 2026: Closing keynote (Aaron Patterson)
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Rails World 2026: Agents on Rails: Building AI Pipelines in plain Ruby (Daniela Velasquez)
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Rails World 2026: Agent-Proof Your Rails App: Your Codebase Is the Prompt (Kinsey Durham Grace)
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Rails World 2026: Active Search (Donal McBreen)
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Rails World 2026: A deep dive into Solid Cable (Nick Pezza)
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Replacing wicked_pdf with sghtmltopdf: no Chrome, no Node
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Cloudflare R2 + Active Storage: every error I hit, and the fix
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Devise has_many :sessions - track, list, and revoke active sessions
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OAuth in Hotwire Native iOS apps with ASWebAuthenticationSession
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Feature Flags and A/B testing with gem flipper
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Devise Masquerade (Login as) with Avo
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Ruby AI. Vector (semantic) search with embeddings
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Staying Competitive - My Talk at Balkan Ruby 2025
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Separate Google and YouTube OAuth Strategies in Rails
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SupeRails Hack Space @ Friendly.rb 2025
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Big family is the new flex
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Google One Tap Authentication with Rails 8 and Devise
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Deploying Rails 8 on Render.com
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Use Solid Trifecta with one Postgresql database
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Readonly Models without database
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AutoNumeric.js: The Best Currency Input Field for Rails
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Turbo confirmation dialogs: native by default, custom when needed
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Conditinally include Avo Pro in your Gemfile
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Random Pagination
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Monaco Mareterra
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2025 is the year of Markdown. Avo built Marksmith Markdown editor for Rails
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Get Youtube video thumbnail image
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Typesense search in a Rails app
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Starting an ecommerce store: not so easy. My story
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My VS Code / Cursor plugins in 2025
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My recommended Jekyll plugins in 2025
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Start a blog with Jekyll and Github Pages for free
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My first Ruby gem. hotwire_native_rails
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Hotwire Native Rails Helpers
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Conditional templates and Viewport for mobile browsers and native apps
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Introduction to Nokogiri. Extract core website data
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Replace Disqus with Giscus comments
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Rails UI Frameworks and Component libraries
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Hotwire Native Bridge Nav (UIMenu) Component
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Hotwire Native Bridge Component - Prompt to leave an AppStore review
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Hotwire Native Bridge Menu (Action Sheet) Component
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Custom chapters with Vimeo Player API
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StimulusJS Cmd Enter to submit form
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Render Markdown FILES in Rails app
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Use Vimeo API with Ruby on Rails
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Sentiment Analysis. Analyze Udemy course reviews
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Authentication Zero vs Devise
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Hotwire Native Bridge Form Component with Rails
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Hotwire Native iOS Path Configuration via API
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Hotwire Native Nav Button with icon
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Hotwire Native CSS and TailwindCSS variants (conditionals)
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Hotwire Native iOS - Tabs and design customisation
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Search and Autocomplete UK Company Information
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Add mentions to a text field with TributeJS
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Prevent images from bouncing on load with gem active_storage-blurhash
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StimulusJS social SHARE button
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Rails 7.2 native rate limiting
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Generate and display OpenGraph images
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French real estate sales database
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Navigating Turbo Native: where to start
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Search and Autocomplete French Company Information
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Map guide to Corsica
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FR-DE EU Electronic eInvoicing standard (FacturX, ZUGFeRD)
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Rails 8 Authentication generator: user registration
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Rails 8 Authentication generator: user sign in
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TailwindCSS on Rails: Dark Mode
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TailwindCSS on Rails: Minimize Collapsible Sidebar
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Sign in with Apple in a Rails app
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i18n basics. Change current app language.
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Automatic i18n. Gem i18n-tasks. Phrase. Weglot.
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Sell access to a GitHub repo. Automatically add/remove collaborators
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TailwindCSS on Rails: reusable button variants
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CFP - Hotwire Datatables with Rails. Frontend tips and tricks
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Track change history of attributes and display diff
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Tailwind CSS Bottom Navigation
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Rails 8 will be a PWA (Progressive Web App) by default!
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Embedded Stripe Checkout
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Cannes-Paris: Car vs Train vs Plane
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Manage active sessions in Rails 2024
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Turbo 8 Prefetch (InstantClick)
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Guest User Record (guest mode)
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Import ICS events to calendar
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How to access localhost anywhere with ngrok
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Build a calendar from zero (Month view)
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Generate PDF and PNG with Ferrum (headless Chrome API)
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Calendar pagination with Pagy
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My 2023 summary and 2024 plans
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Country select dropdown. Why does country_select gem even exist?
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Does Turbo 8 morphing make sense?
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HTML to PDF in Rails with gem DocRaptor (successor of wicked_pdf)
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Testing Rails cache
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Revised: Hotwire Turbo Modals with HTML Dialog
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Custom Turbo Stream Actions
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Search multiple models
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Generate barcodes on the frontend with JsBarcode
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StimulusJS Keyboard Hotkeys (Keyboard navigation)
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Crazy, stupid page transition animation with StimulusJS and TailwindCSS
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Progress animation with HTML meter element and javascript
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Modals with HTML dialog element, TailwindCSS and StimulusJS
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TailwindCSS on Rails 03: Responsive content layout. Grid, Flex, Center
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TailwindCSS on Rails 02: Responsive dropdown menu
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TailwindCSS on Rails 01: Responsive layout with sidebar
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Heroku upload local database to production
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Use Gem Rack-attack with Devise and Rails 7
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DRY custom error pages
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Image scraping with Rails. Save image from URL to ActiveStorage
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Finding similar/related posts/products based on matching tags
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Use Sidekiq in Development and Production
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Use YouTube API with Ruby on Rails
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DateRangePicker with StimulusJS, Importmaps, gem Ransack
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API pagination with Pagy
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API Tracking and Usage limiting
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API documentation with OpenAPI and Swagger using gem Rswag
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Rails CRUD API requests with Faraday
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Rails CRUD API requests with cURL
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Build a Public-facing Rails API with Bearer token authentication
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Testing Devise authentication with Minitest and Faker
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Test Omniauth authentication (github, azure)
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Omniauth with Microsoft (Azure Active Directory)
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EU Ruby conferences in 2023
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Find a saved WIFI password on Windows 10 or Windows 11
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Broadcaster pattern for Turbo Streams Broadcasts
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14 Ruby on Rails and 7 Hotwire interview questions in 2023
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ChatGPT exists. Should I stop writing?
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TLDR: Rails 7 Active Record Encryption
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Trello Clone: drag, drop and save changes with Ranked-Model, SortableJs and RequestJs
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Best practices for writing and collaborating on Rails code
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What's the difference between Rails 4, Rails 5, Rails 6 and Rails 7?
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Style default error pages in a Rails app
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Reverse Engineering Pipplet Database Architecture
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Recent search history with Kredis
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Send SMS with Twilio in Rails
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Realtime Online User Tracking with Actioncable and Rails
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Live Visit Count for website or page. ActionCable, Turbo Broadcasts, Kredis
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How to use the Browser Geolocation API with Rails
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gem MapkickJS for beautiful JavaScript maps with one line of Ruby
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gem Geocoder - calculate coordinates, distances, search nearby
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Parse JSON with Ruby on Rails
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Parse YAML with Ruby on Rails
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Omniauth without Devise
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Complete guide to iCalendar events with Ruby
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Notes on using ActionMailer
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Browser tab title notifications
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CSS: make text on image readable
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Hotwire Search Infinite Pagination
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Hotwire Turbo: Edit each attribute inline
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Process ActiveJob background jobs with gem good_job and Postgres without Redis
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Use Service Objects
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Passwordless: log in with magic link
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StimulusJS advanced copy to clipboard
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Slim Select with StimulusJS
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Highlight @ mentions, convert # hashtags to links
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Deploy to DigitalOcean App Platform in Production
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Slack API. Send text, markdown and files to Slack
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Github Actions. CI/CD basics
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Estimated reading time calculator with Ruby
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RGB complimentary colors (opposite colors) in Ruby
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Autogenerate and store images with Rmagick and Imagemagick with ActiveStorage
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Convert integer to time (hh:mm:ss)
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Link to previous page if internal request
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My journey through hackathons and startup weekends
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Double loading StimulusJS controllers
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Use SwearJar to moderate and censor bad words. **** you!
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auto-style your html.erb with gem erb-lint
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StimulusJS Tabs
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Export CSV from Rails
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Import CSV to Rails
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Load partials async with Turbo Frames
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StimulusJS checkboxes. Select all. Deselect all
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Mass update selected records
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Gem Kredis #2 - recently visited pages
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Gem Kredis #1 - access Redis via ActiveRecord
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Accept cookies consent banner in Rails
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SVG in Rails. Gem inline_svg
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Stop writing strftime
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Chained select fields for gem City-State. Dynamic forms
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Chained select fields for custom data structures
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First steps to learning Web Development
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My thoughts about Web Development in 2022
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Classless CSS frameworks
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Semantic HTML in Ruby on Rails
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Fontawesome + Importmaps + Rails 7
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gem acts_as_votable 4: cached votes, vote scopes, Hotwire
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Hotwire Turbo Frames: Hovercards
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Integrate MarkedJS Markdown Parser into a Rails app
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Live form validations and error rendering. Live markdown preview
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StimulusJS Textarea autogrow
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StimulusJS Dropdown
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🛑🇷🇺 Block access to your software from Russia IPs
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TIL: Pass a Hash to Flash
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Tip: distance_of_time_in_percent
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#21 Hotwire Turbo: The one right way to do Modals
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Gem data-migrate - an essential gem!
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Quick tip: Using Partials to Simplify Views
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Stimulus JS: A Basic Dropdown controller
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#20 Turbo Streams: autocomplete search
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#19 FORM_WITH: conditionally respond with html OR turbo_stream
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#18 BUTTON_TO: conditionally respond with html OR turbo_stream
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TIP: if-else, case-when, hash?
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TIP: Rendering partials and collections
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#17 Turbo Streams: Broadcasts
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Install Ruby on Rails 7
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Emoji select with `gem unicode-emoji`
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TIL: HTML tags I did not know about
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TIL: date_select VS date_field
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TIL: Loading animation for a Skeleton loader
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#16 Turbo Streams: Edit Modal.
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Tip: Automatically annotate rails views
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#15 Turbo Streams CRUD
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StimulusJS autopaste controller
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Make Devise work with Hotwire Turbo and Rails 7
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Pretty URLs with gem friendly_id
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RE-REVISED: Polymorphism 101. Part 5 of 3. Even better Polymorphic Comments
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TIP: URL helper: Redirect to previous page
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Validate uniqueness on the database level
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#13 Turbo Streams: 5 ways to render View Components
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Paginate/Tab records by any attribute
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Basic CSS for new Rails projects without a CSS Framework
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#12 Turbo: Pagination with gem Pagy, ViewComponent without page refresh
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#11 Turbo Frames - Load content only when a dropdown is opened
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#10 Turbo Streams - Create and stream records. Flash messages. Reusable Streams
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Gem Meta Tags for better SEO
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#9 Turbo Frame Tabs
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#8 Hotwire Turbo: Tabbed content with Turbo Streams
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ONLY Omniauth login with Devise (without email registration)
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Tiny Tip: Inline if-else statements
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#7 Hotwire Turbo Frames: Search without page refresh. Stimulus. Ransack
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5 ways to associate current_user with record on create
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Generate Entity-Relationsip-Diagrams (ERD) from a Rails app
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#6 Hotwire Turbo: Increment likes count without any page refreshes
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#5 Turbo: Button to update status and refresh frame. Edit inboxes inline
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Tiny Tip: URL and link helpers.
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#4 Turbo Frame - Sort records without page refresh. Sorting without a gem.
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Tiny Tip: Debug current request in views
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Current attribute. Access current_user from model
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#3 Turbo: Keep the audio playing after changing the page with data-turbo-permanent
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#2 Turbo Stream inboxes to inboxes/index. Lazy load form. Replace form on submit.
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#1 Turbo Stream messages to inbox. Render errors
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Install and use ActiveAdmin in 13 steps
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HTTP Basic authentication
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Generate a BARCODE for a Product
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Generate a QR code for a Product and store it in ActiveStorage. Service Objects
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Select or Create Tags with Tom-Select without jQuery (VanillaJS)
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Gem Traceroutes - find routes without controller actions, actions without routes
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Gem Public Activity: Complete guide to total surveillance
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Export from database table to Excel Workbook. Level 1
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Quick tip: Helper to display different text based on time of day
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gem Draper: abstract view logic from the model
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Boolean Checkbox array - easier than you think!
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Procfile: automatically run migrations on Heroku deploy
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Install and use Rubocop - TLDR
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Stimulus Read More - MY WAY!!!
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Rails authorization with gem Pundit
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Rails enums - different approaches
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Ruby on Rails 6+: install jQuery with yarn and webpacker
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gem acts_as_votable 3: vote search scopes
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config_for settings.yml
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REVISED: Polymorphism 101. Part 4 of 3. Polymorphic Comments
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Quick tip: Permit params by current user roles
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Edit Rolify roles for a User
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Markdown Level 2. Style markdown css with gem Rouge
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Migrating from Bootstrap 4 to Bootstrap 5
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Add Markdown to your Rails app
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Role scopes with gem Rolify
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Install and use gem pg_search
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Stimulus Rails - Count characters in input field (+ add css if > 140 characters)
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Stimulus Rails - Count characters in input field
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StimulusJS - Display or hide HMTL based on field input
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Install Stimulus on Ruby on Rails 6
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Display or hide div based on field input (RoR + JS)
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Add social log in with Github (Omniauth)
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Complete guide to generating PDFs with gem wicked_pdf
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install and troubleshoot mysql
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gem acts_as_votable 2: reddit-style up and down voting
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gem acts_as_votable 1: Like and Dislike posts with Vanilla JS
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Discount coupon: Ruby on Rails 6: Learn 25+ gems and build a Startup MVP 2020
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Launching course: Ruby on Rails - Learn to Build a Multitenancy Subscriptions SaaS app MVP
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Install Bootstrap 5 with Ruby on Rails 6+. Yarn, Webpack. Popovers, Tooltips. StimulusJS
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Telegram Part 3. Authentication. Bot to send private messages
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Telegram Part 2. Notification for CRUD actions
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Search field without gems
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counter_cache - count how many children a records has
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Telegram Part 1. Button to send group messages
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Button to update status attribute of a table
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Polymorphism 101. Part 3 of 3. ActsAsTaggable without a gem. SelectizeJS
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Polymorphism 101. Part 2 of 3. Polymorphic Payments inside-out.
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Polymorphism 101. Part 1 of 3. Polymorphic Comments.
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Custom scaffold templates
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Sending emails in production with Amazon SES
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Install and use gem invisible_captcha with devise (and the 5 traps to avoid)
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styling for true false values
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One hash field to manage all user roles
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HAML or ERB for Ruby on Rails development in 2021?
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Ruby on Rails 6: Disappearing flash messages with toastr
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Navbar with Devise and Bootstrap (4, 5)
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Add custom error pages in a Rails app
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How to use Credentials in Ruby on Rails 6? TLDR
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How to use Credentials in Ruby on Rails 6? Full guide
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SaaS: How to code the subscriptions business model?
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How to Embed Youtube videos with ActionText? TLDR
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How to load Heroku production database in development?
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Write skinny scaffolds and generators
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Ruby on Rails: How to setup Postgresql? TLDR
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How to Install FontAwesome with Yarn and Webpacker in Rails 6?
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Ruby on Rails: templates and generators in 2020
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Rails 6: Install Bootstrap 4 with Yarn and Webpacker: TLDR
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Rails 6: Install Bootstrap with Yarn and Webpacker: Full guide
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Push to github without re-entering password (connect SSH key)
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Highlight link to current page
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Ruby on Rails: Dark Mode: TLDR
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Quick tip: Footer on the bottom of the page: TLDR
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Install Ruby on Rails 6 with Webpacker and Yarn on Ubuntu: TLDR
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Install Ruby on Rails 5 on Ubuntu: TLDR
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3 months on Skillshare. My results
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Build a Trello clone with Ruby on Rails, RankedModel and jQuery Sortable
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Tracking Online Users using Timestamps
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Memo - Rails ActiveRecord data types
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Just hit 100 sales and $900 on Udemy!!! [RoR course]
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$1000 in AWS credits for startups (For free)