AshDispatch.UserPreference.Default (AshDispatch v0.5.0)

Default user preference checker that allows all notifications.

This is used when no custom preference checker is configured. It always returns true, meaning all notifications are sent.

Why Default to Allow?

AshDispatch should work out-of-the-box without requiring preference setup. Apps can add preference checking later when they're ready.

Configuring a Custom Checker

To enable user preference checking, configure your own implementation:

# config/config.exs
config :ash_dispatch,
  user_preference: MyApp.NotificationPreferences

Then implement the behaviour:

defmodule MyApp.NotificationPreferences do
  @behaviour AshDispatch.UserPreference

  @impl true
  def user_allows?(user_id, _event_id, _transport, opts) do
    # Your preference logic here
    category = opts[:category]

    # Example: Check database
    case Ash.get(UserPreference, user_id) do
      {:ok, prefs} -> category not in prefs.disabled_categories
      _ -> true
    end
  end
end

See AshDispatch.UserPreference for complete documentation.