Cells

Encapsulates UI logic in Ruby classes, promoting clean separation of concerns and reusable components, as evidenced by the view model approach that replaces Rails helpers.

Components render to plain HTML, allowing seamless testing with RSpec, MiniTest, or other frameworks, with a consistent API between production and test environments.

Offers caching per state with configurable expiration and dynamic keys, enabling performance optimizations for frequently rendered components without extra gems.

Supports bundling JavaScript, CSS, and images with cells, creating self-contained widgets that integrate with Rails' asset pipeline for encapsulation.