7 Patterns to Refactor Fat ActiveRecord Models

When teams use Code Climate to improve the quality of their Rails applications, they learn to break the habit of allowing models to get fat. “Fat models” cause maintenance issues in large apps. Only incrementally better than cluttering controllers with domain logic, they usually represent a failure to apply the Single Responsibility Principle (SRP). “Anything related to what a user does” is not a

[yimajo]

“ Virtus”使ってるとこは ActiveModel::Attributes 使うとして、全般的に参考になる