viewcomponent-patterns

Build reusable Rails ViewComponents by encapsulating UI logic into Ruby classes with templates, creating components like cards and badges to eliminate duplicated view code across Rails 8 applications.

Slots in ViewComponent enable flexible content composition by allowing multiple content blocks within a single component, supporting complex patterns like cards with optional headers and footers.

Test Rails ViewComponents using test-driven development by writing component tests that verify rendering behavior, and use previews to visually inspect components in isolation before integrating them into views.

Yes, the ViewComponent patterns including ApplicationComponent usage, slot-based composition, and test-driven development are designed to work across Rails 8 applications for building reusable UI components.

ApplicationComponent is a base class pattern for ViewComponents that establishes shared conventions across all UI components, ensuring consistency in how components encapsulate logic and render views.

Use ViewComponents instead of partials when you need to encapsulate complex UI logic, create reusable building blocks like cards and modals, and want test-driven development support with previews to verify behavior.