liveview-guidelines

Using LiveView streams is the best way to handle large collections in Phoenix LiveView. Streams manage data efficiently instead of storing entire collections in assigns, reducing memory usage and improving UI rendering performance for dashboards and chats.

Manage JavaScript interoperability in Phoenix LiveView by using colocated JS hooks and phx-hook attributes. This approach keeps scripts organized and ensures reliable communication between client-side JavaScript and server-rendered LiveView components.

Test Phoenix LiveView features reliably by using Phoenix.LiveViewTest and LazyHTML. These tools provide robust UI verification approaches, allowing you to assert on rendered HTML and simulate user interactions for comprehensive testing.

Phoenix LiveView supports real-time form handling without full page reloads by using to_form and LiveView components. This technique standardizes form validations and submissions, maintaining UI consistency across interactive features.

Use phx-update attributes in LiveView streams when you need to control how DOM elements are appended, prepended, or replaced during re-renders. This ensures correct UI updates for dynamic collections like chat messages or live dashboard data.