rubocop

RuboCop performs static analysis and applies safe autocorrections to enforce Ruby style guidelines. Run `rubocop -a` in your Rails project to automatically remediate code quality issues while preserving functionality.

Yes. RuboCop supports extensions like rubocop-rspec for test syntax and rubocop-performance for optimization patterns. Layer these plugins in your .rubocop.yml configuration to lint Rails, RSpec, and performance code together.

Create a .rubocop.yml file in your project root to configure per-cop rules, directory-specific settings, and plugin extensions. RuboCop reads this configuration to apply your custom style requirements and unsafe autocorrections.

Safe autocorrections preserve code behavior and run automatically with `-a`. Unsafe autocorrections may alter logic and require explicit `-A` flag. Review unsafe changes before applying them to avoid unintended side effects.

Yes. RuboCop runs in CI environments to enforce style gates and integrates with pre-commit frameworks to catch violations before commits. Configure it to fail builds when linting violations exceed your project's thresholds.

RuboCop handles Rails projects of any size and age. Use per-directory configuration and disable specific cops for legacy code sections, then gradually enforce new rules as you refactor.