Implementing Async Assigns with LiveView in Elixir

John Curran's article discusses the enhancements introduced by Phoenix LiveView 0.20.0, particularly focusing on the `assign_async` and `async_result` functions which simplify the handling of asynchronous data loading in LiveViews. `assign_async` is used to load data asynchronously by defining a name for the assign, the keys, and a function to execute the async operation. The function needs to return an `{:ok, assigns}` or `{:error, reason}` tuple, and the async work is only carried out if the socket is connected. On the front end, the `AsyncResult` struct is used which contains the status of the async operation. A `AsyncResult.loading()` function sets up an initial loading state, and once the operation completes, `handle_async/3` callbacks help in updating the socket with success or fail states. The `async_result` helper is also introduced to make template side of operations cleaner by providing slots for loading, error, and success states. Curran's article comes with code snippets and examples showing how to apply these features to manage asynchronous data loading in LiveView applications with more ease and less boilerplate code. The author concludes with the benefits of using these functions to improve developer efficiency and UX by handling async operations more gracefully.