LifeCycleHook

LifeCycleHook is a simple hook that logs each life-cycle step of LiveView.

It is good for learning Phoenix LiveView life-cycle.

Overview

:warning: Logging handle_parmas stage with LifeCycleHook is not working with sticky nested LiveView.

By mounting LifeCycleHook on LiveView with use LifeCycleHook, you can see logs for each life-cycle.

defmodule MyApp.MyLive do
  use Phoenix.LiveView
  use LifeCycleHook

  @impl true
  def render(assigns) do
    ...
  end
end
[debug] Elixir.MyApp.MyLive mount with HTTP
[debug] Elixir.MyApp.MyLive handle_params with HTTP
[debug] Elixir.MyApp.MyLive mount with WebSocket
[debug] Elixir.MyApp.MyLive handle_params with WebSocket

If you want to choose specific stages to log, you can use only or except option in use LifeCycleHook.

defmodule MyApp.MyLive do
  use Phoenix.LiveView
  use LifeCycleHook, only: [:mount]

  @impl true
  def render(assigns) do
    ...
  end
end
[debug] Elixir.MyApp.MyLive mount with HTTP
[debug] Elixir.MyApp.MyLive mount with WebSocket

Installation

If available in Hex, the package can be installed by adding life_cycle_hook to your list of dependencies in mix.exs:

def deps do
  [
    {:life_cycle_hook, "~> 0.4.0"}
  ]
end

TO DO