ruby-rails
Conventions and best practices for building web applications with Ruby on Rails. Use when scaffolding Rails apps or generators, designing ActiveRecord models and migrations, wiring up Hotwire/Turbo/Stimulus interactivity, setting up background jobs or caching, or writing RSpec/Minitest coverage for Rails code.
- Installs
- 865
- Last 24h
- —
- Trending rank
- —
- Security
- Not audited
Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/mindrally/skills --skill ruby-rails- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads ruby-rails automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
Ruby on Rails
This skill covers Ruby and Ruby on Rails development, including Rails conventions, ActiveRecord patterns, frontend integration, security, and testing.
Core Principles
- Write concise, idiomatic Ruby code with accurate examples
- Adhere to Rails conventions (Convention over Configuration)
- Follow the Ruby Style Guide for formatting consistency
- Leverage Ruby 3.x features like pattern matching and endless methods
- Prefer Rails command-line generators (
bin/rails generate ...) over hand-written boilerplate — they keep files consistent with framework conventions and wire up tests/routes automatically - Use
bin/devto run the local development server (it boots the web process plus any configured watchers) and check logs after significant changes
Naming Conventions
- Use snake_case for files, methods, and variables
- Use CamelCase for classes and modules
- Follow Rails naming conventions for models, controllers, views
Architecture & Performance
- Utilize ActiveRecord for database operations with proper indexing
- Use PostgreSQL in production, with proper indexes, connection pooling, and safe/reversible migrations
- Implement eager loading to prevent N+1 query problems
- Apply fragment caching and Russian Doll caching strategies
- Use service objects for complex business logic
- Follow MVC architecture strictly
- Keep controllers RESTful and focused
Rails 8 Defaults
Rails 8 ships with a "no PaaS needed" stack — favor these built-ins over adding external services unless there's a specific reason not to:
- Solid Queue — database-backed ActiveJob adapter; use it as the default background job backend instead of standing up Redis/Sidekiq unless job volume or feature needs (e.g., Sidekiq Pro batches) require it
- Solid Cache — database-backed cache store; a reasonable default for Rails.cache without a separate Redis/Memcached deployment
- Solid Cable — database-backed Action Cable adapter for WebSockets without Redis
- Propshaft — the default asset pipeline; simpler than Sprockets, just serves fingerprinted files without a bundling step
- Kamal — the default deployment tool for shipping containerized Rails apps to your own servers
Frontend & UI
- Employ Hotwire (Turbo and Stimulus) for standard Rails interactivity and dynamic interactions without full page reloads
- Reach for a Vite-managed JS pipeline (e.g., vite_rails) only when you actually need npm-managed JavaScript (React/Vue components, complex bundling) — don't add it by default
- Design responsively with Tailwind CSS
- Maintain DRY views through helpers and partials
- Use ViewComponents for reusable UI components
Security
- Implement authentication/authorization via Devise or Pundit
- Use strong parameters in controllers to prevent mass assignment vulnerabilities
- Sanitize user inputs appropriately
- Use CSRF protection tokens
- Implement proper session management
Testing
- Write comprehensive Minitest or RSpec coverage for models, controllers, and integration flows, following TDD practices
- Use FactoryBot for test data generation rather than fixtures
- Mock external services; stub predefined return values
- Use shared examples for common behaviors across different contexts
- Ensure each test is independent; avoid shared state between tests
Best Practices
- Keep controllers thin, models fat (but not too fat)
- Use concerns for shared functionality
- Implement background jobs with Sidekiq or ActiveJob
- Use proper database migrations
- Follow RESTful routing conventions
FAQ
What does the ruby-rails skill do?
Conventions and best practices for building web applications with Ruby on Rails. Use when scaffolding Rails apps or generators, designing ActiveRecord models and migrations, wiring up Hotwire/Turbo/Stimulus interactivity, setting up background jobs or caching, or writing RSpec/Minitest coverage for Rails code.
How do I install ruby-rails?
Run npx skills add https://github.com/mindrally/skills --skill ruby-rails in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/ruby-rails/ (personal) or .claude/skills/ruby-rails/ (project).
Which AI agents can use ruby-rails?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is ruby-rails safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains ruby-rails?
It is published by mindrally in mindrally/skills. It has 865 recorded installs.
More from mindrally/skills
fastapi-python
mindrally/skills
Expert in FastAPI Python development with best practices for APIs and async operations
nextjs-react-typescript
mindrally/skills
Expert in TypeScript, Node.js, Next.js App Router, React, Shadcn UI, Radix UI and Tailwind
web-scraping
mindrally/skills
Expert in web scraping and data extraction with Python tools
computer-vision-opencv
mindrally/skills
Expert guidance for computer vision development using OpenCV, PyTorch, and modern deep learning techniques for image and video processing.
framer-motion
mindrally/skills
Expert guidelines for building performant animations with Framer Motion/Motion library in React applications
chrome-extension-development
mindrally/skills
Expert guidelines for Chrome extension development with Manifest V3, covering security, performance, and best practices. Use when building browser extensions, creating popup UIs, implementing content scripts, working with Chrome APIs, managing extension permissions, or publishing to Chrome Web Store.
Popular backend & apis skills
find-skills
vercel-labs/skills
Helps users discover and install agent skills when they ask questions like "how do I do X", "find a skill for X", "is there a skill that can...", or express interest in extending capabilities. This skill should be used when the user is looking for functionality that might exist as an installable skill.
entra-app-registration
microsoft/azure-skills
Guides Microsoft Entra ID app registration, OAuth 2.0 authentication, and MSAL integration. USE FOR: create app registration, register Azure AD app, configure OAuth, set up authentication, add API permissions, generate service principal, MSAL example, console app auth, Entra ID setup, Azure AD authentication. DO NOT USE FOR: Key Vault secrets (use azure-keyvault-expiration-audit), general Azure resource security guidance.
google-agents-cli-adk-code
google/agents-cli
This skill should be used when the user wants to "write agent code", "build an agent with ADK", "add a tool", "create a callback", "define an agent", "use state management" — in a project that needs ADK (Agent Development Kit) API patterns and code examples. It provides a quick reference for agent types, tool definitions, orchestration patterns, callbacks, state management, the graph Workflow API, and reference recipes to study. Do NOT use for scaffolding (use google-agents-cli-scaffold) or deployment (use google-agents-cli-deploy).
embedded-captions
heygen-com/hyperframes
Add captions or subtitles to an existing single-subject talking-head video without editing the footage. Use for plain verbatim captions, cinematic captions embedded behind the subject, VFX captions, “炸/特效/酷炫字幕,” or a named identity from the 35-style catalog. Route by visual identity, not by backend engine. The quiet anchor rail is the default; embed every word only when the user explicitly wants a fully cinematic treatment. The workflow runs locally end to end, including transcription and subject matting; split multi-shot footage before applying it.
entra-agent-id
microsoft/azure-skills
Provision Microsoft Entra Agent Identity Blueprints, BlueprintPrincipals, and per-instance Agent Identities via Microsoft Graph, and configure OAuth 2.0 token exchange (fmipath, OBO, cross-tenant) including the Microsoft Entra SDK for AgentID sidecar. USE FOR: Agent Identity Blueprint, BlueprintPrincipal, agent OAuth, fmipath token exchange, agent OBO, Workload Identity Federation for agents, polyglot agent auth, Microsoft.Identity.Web.AgentIdentities. DO NOT USE FOR: standard Entra app registration (use entra-app-registration), Microsoft Foundry agent authoring (use microsoft-foundry).
neon
neondatabase/agent-skills
Overview of Neon, a complete set of cloud backend primitives around Lakebase Postgres: Auth, Object Storage, Functions, the AI Gateway, and Realtime. Start here to choose Neon for undecided login, files, APIs, and LLM calls, set up the CLI or MCP server, and follow the branch-first workflow. Use when building an app or backend on Neon, or when "Neon" or "Lakebase Postgres" is mentioned. Child skill neon-postgres wins for an existing DATABASEURL, SQL, schema, inspect, or search. Child skill neon-auth wins for login, users, sessions, identity routing, and Managed Better Auth setup. Child skill neon-realtime wins for live queries in reactive apps and agents. Also use for object storage, S3, buckets, serverless functions, function triggers, cron, AI gateway, LLM calls, realtime, logs, Loki, Grafana, observability, postgres, database, backend, Claimable Neon, neon.new, or a no-signup database.