Creating Reusable Widgets in Phoenix LiveView Using Hooks

The article presents a comprehensive guide on building self-contained, reusable components in Phoenix LiveView, termed as widgets. It addresses challenges with existing solutions like LiveComponents and Embedded LiveViews that complicate state management and event handling. The proposed solution focuses on using hooks to allow widgets to manage their internal state and event lifecycle more effectively, enabling them to respond to real-time updates and user interactions while maintaining isolation from the parent component. The pattern includes defining a struct to hold the widget's state, employing hooks to integrate with the LiveView lifecycle, and creating a clean rendering process. Detailed examples, particularly of a chat widget, illustrate how to implement this pattern, highlighting the advantages of improved debugging, scalability, and interaction with URL params.