Guide Ruby development covering idioms, OO design, error handling, and Rails conventions.
npx skills add https://github.com/el-feo/ai-context --skill ruby
Please help me install this Agent Skill. Skill: ruby Source: https://github.com/el-feo/ai-context/tree/main/skills/ruby Command: npx skills add https://github.com/el-feo/ai-context --skill ruby
This Skill helps developers write idiomatic, maintainable Ruby code by synthesizing language fundamentals, design patterns, error handling strategies, performance tips, and Rails-idioms. It guides you from basics to modern Ruby 3.x features and Rails best practices.
Use this skill to kick off Ruby development tasks: define a small class, apply best practices, and run tests to verify behavior.
High-intent search queries and answers about installing and using this skill.
Idiomatic Ruby emphasizes readability, expressiveness, and convention over configuration. Write code using Ruby's built-in methods, blocks, and iterators; follow naming conventions; apply object-oriented design principles; handle errors with appropriate exception types; and adopt Ruby 3.x features like pattern matching for cleaner logic.
Refactor Ruby code by extracting methods into logical units, applying design patterns for clarity, reducing complexity through composition, optimizing hot paths with profiling data, and leveraging modern Ruby features. Write tests first to verify behavior doesn't change during refactoring.
Design patterns in Ruby leverage metaprogramming—method_missing, define_method, and class macros—to reduce boilerplate and increase flexibility. Use these techniques deliberately for Rails models, validations, and DSLs; avoid overuse that obscures intent. Test edge cases thoroughly.
Ractors in Ruby 3.x enable parallel execution with isolated state, avoiding GIL contention. They work well for CPU-bound tasks; use threads for I/O-bound work. Choose based on your workload; test thoroughly since concurrency introduces race conditions and deadlock risks.
Test Ruby code with focused unit tests; apply testing patterns like arrange-act-assert and test doubles. Handle exceptions by catching specific error types, logging context, and failing fast. Raise custom exceptions for domain errors; avoid catching Exception broadly.
Rails conventions—ActiveRecord models, controller structure, naming patterns—embed Ruby best practices. Follow Rails idioms: use scopes for queries, validators for data integrity, callbacks cautiously, and engines for reusable components. Write Rails code that reads like Ruby.
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