rails-models

Designing robust ActiveRecord models requires adding necessary database constraints, indexes, and optimized associations during migrations. Following Rails conventions prevents common pitfalls like N+1 queries and fragile callbacks.

ActiveRecord best practices include using real-world examples for validations, associations, scopes, and enums. For callbacks, it is recommended to use safer callback strategies or extract logic into service objects to maintain model robustness.

You need database indexes and migration changes when reviewing a model to improve correctness and performance. Adding indexes and constraints ensures efficient query patterns and maintains data integrity at the database level.

Refactoring ActiveRecord models involves reviewing validations, associations, and callbacks to align with Rails conventions. It includes recommending model refactors and safer callback strategies or extracting logic into dedicated service objects.

Yes, you can use ActiveRecord scopes and enums to encapsulate query logic and improve query patterns. Applying these best practices ensures your Rails models maintain optimal performance and follow standard conventions.

ActiveRecord callbacks feel fragile when they cause unintended side effects or complex dependencies. You should extract them into service objects to isolate business logic, improving testability and preventing fragile model behavior.