--- title: The Flipper gem is amazing, here's how we extended it... description: A practical deep dive into extending the Flipper gem for Rails beyond its defaults. Covers four real-world customizations built for StackBlitz: resolving... canonical: https://daily.dev/posts/the-flipper-gem-is-amazing-here-s-how-we-extended-it-the-martian-way-martian-chronicles-evil-marti-dy1mzk7hs twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: The Flipper gem is amazing, here's how we extended it the Martian way—Martian Chronicles, Evil Martians’ team blog | daily.dev og:description: A practical deep dive into extending the Flipper gem for Rails beyond its defaults. Covers four real-world customizations built for StackBlitz: resolving... og:url: https://daily.dev/posts/the-flipper-gem-is-amazing-here-s-how-we-extended-it-the-martian-way-martian-chronicles-evil-marti-dy1mzk7hs og:image: https://api.daily.dev/og/posts/Dy1MZk7hS.png og:image:alt: The Flipper gem is amazing, here's how we extended it the Martian way—Martian Chronicles, Evil Martians’ team blog og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # The Flipper gem is amazing, here's how we extended it the Martian way—Martian Chronicles, Evil Martians’ team blog **[Martian Chronicles](https://daily.dev/sources/evilmartians)** · 10 min read · 0 upvotes · 0 comments ## Summary A practical deep dive into extending the Flipper gem for Rails beyond its defaults. Covers four real-world customizations built for StackBlitz: resolving human-friendly actor IDs (usernames, emails, slugs) instead of raw database IDs; enabling feature flags for entire organizations so all members inherit them; tracking first-observed feature flag enablement events for analytics without flooding quotas; and adding audit logging for admin actions by injecting a custom Rack middleware into Flipper's standalone UI to access current user context. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [The Friday Deploy: Changing the Wheels While the Car Is Moving](https://daily.dev/posts/the-friday-deploy-changing-the-wheels-while-the-car-is-moving-7ud5yhefg) · RUBYLAND · 2 upvotes · 0 comments - [2 Martians, greenfield to MVP in 4 weeks: agentic coding on Rails—Martian Chronicles, Evil Martians’ team blog](https://daily.dev/posts/2-martians-greenfield-to-mvp-in-4-weeks-agentic-coding-on-rails-martian-chronicles-evil-martians--jfk5nweey) · Martian Chronicles · 5 upvotes · 1 comments - [Issue \#808: Getting Mastodon on Spinel — Ruby Weekly](https://daily.dev/posts/issue-808-getting-mastodon-on-spinel-ruby-weekly-idv8fz5r1) · Ruby Weekly · 0 upvotes · 0 comments - [Stripe-Style IDs in Rails: A Guide to the make\_id Gem](https://daily.dev/posts/stripe-style-ids-in-rails-a-guide-to-the-make-id-gem-zifmcrlgv) · Ruby Flow · 0 upvotes · 0 comments - [Agents on Rails: Stage 2. 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