Rails Dev

What it does

This skill provides a comprehensive guide to Ruby on Rails development best practices, focusing on performance and maintainability. It offers 45 prioritized rules across eight categories to assist with code generation and automated refactoring. The skill helps developers write efficient and secure Rails applications by providing guidance on various aspects of backend development.

When to use it

• When writing new Rails controllers, models, or views.
• For optimizing ActiveRecord queries and database access patterns.
• When implementing caching strategies (fragment, Russian doll, low-level).
• To build or refactor API endpoints.
• During code review to identify N+1 queries and security vulnerabilities.
• When designing background jobs using Sidekiq or Active Job.

Key capabilities

• Provides prioritized rules for database & ActiveRecord optimization (e.g., eager loading associations, adding indexes).
• Offers guidance on controller and routing best practices (e.g., thin controllers, strong parameters, RESTful routes).
• Includes security recommendations (e.g., parameterized queries, CSRF protection).
• Covers model and business logic considerations (e.g., validation at the model level, using service objects).
• Addresses caching and performance strategies.
• Provides advice for API design and background job implementation.

Example prompts

• "Generate a Rails controller with strong parameters."
• "How can I optimize this ActiveRecord query to avoid N+1 queries?"
• "What are the best practices for implementing fragment caching in Rails?"

Tips & gotchas

• The skill focuses on established Ruby on Rails development patterns and doesn't cover all possible scenarios.
• Prioritize rules based on their impact level (CRITICAL, HIGH, MEDIUM-HIGH, LOW-MEDIUM) as indicated within the guide.
• This is a reference guide; it may require some understanding of Rails concepts to fully utilize its recommendations.