Summary
In this chapter, we explored the Interface Adapters layer of Clean Architecture, implementing controllers and presenters that maintain clean boundaries while enabling practical interaction with external systems. We learned how controllers handle incoming requests, converting external input into formats our use cases can process, while presenters transform domain data into view-friendly formats.
Using our task management system as an example, we saw how to implement controllers that remain independent of specific input sources and presenters that separate formatting logic from view implementation details. We built on the result pattern from Chapter 5, introducing OperationResult for explicit success and failure handling at our architectural boundaries. The humble object pattern showed us how to maintain clean separation between presentation logic and views, improving both testability and maintainability.
In Chapter 7 we’ll explore how to implement specific interfaces...
