Does this skill help with testing decorators?

Yes, it includes detailed patterns for unit testing decorators using RSpec, including how to mock models and verify HTML output using Capybara string matchers.

What is the Draper Decorators skill for Claude Code?

It is a specialized capability that provides Claude with the domain knowledge to implement the Draper gem patterns, helping to separate view-related logic from business logic in Ruby on Rails applications.

How does the skill handle N+1 queries in decorators?

The skill emphasizes the 'Critical' best practice of using ActiveRecord 'includes' in the controller before decorating to ensure that associated data is eager-loaded.

When should I use a decorator instead of a standard Rails helper?

Decorators are preferred when logic is object-oriented and specific to a model instance (like a User's display name), whereas helpers are better suited for generic, global utility methods.

Draper Decorators for Rails

Name: Draper Decorators for Rails
Author: hoblin

byhoblin

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Developer Tools

Simplifies Ruby on Rails view logic by implementing the decorator pattern using the Draper gem for cleaner models and views.

About

This skill empowers Claude to efficiently implement the decorator (presenter) pattern in Ruby on Rails applications. It provides expert guidance on moving presentation-only logic—such as date formatting, string concatenation, and HTML generation—out of models and views into dedicated decorator classes. By using this skill, developers can ensure a strict separation of concerns, keep models focused on business logic, and maintain cleaner, more readable view templates while leveraging the full power of the Draper gem's delegation and helper integration.

Key Features

9 GitHub stars
Implementation patterns for association decoration and collection wrapping
Automated decorator structure generation with proper delegation strategies
Standardized RSpec testing templates for validating decorator output and HTML
Expert guidance on accessing Rails view helpers within decorators using the h proxy
Best practices for handling context passing and conditional rendering logic

Use Cases

Refactoring 'fat models' by moving presentation-specific methods like full_name or formatted_price into decorators
Implementing standardized formatting for dates, currency, and status badges across an entire Rails application
Cleaning up logic-heavy Rails views to improve template readability and maintainability

About

Key Features

9 GitHub stars
Implementation patterns for association decoration and collection wrapping
Automated decorator structure generation with proper delegation strategies
Standardized RSpec testing templates for validating decorator output and HTML
Expert guidance on accessing Rails view helpers within decorators using the h proxy
Best practices for handling context passing and conditional rendering logic

Use Cases

Refactoring 'fat models' by moving presentation-specific methods like full_name or formatted_price into decorators
Implementing standardized formatting for dates, currency, and status badges across an entire Rails application
Cleaning up logic-heavy Rails views to improve template readability and maintainability