I don’t know if this is idiomatic, but the way I think of it is:

When it’s the same “view”, mostly the same page, but slightly modified, for example a component rendered with different params, or “toggled” to be shown or hidden at all as you suggested, but the event handlers and are mostly the same - I would use @live_action.

However, when, suppose, “Index” and “show” actions differ too much from each other and I find that too much of their logic get mixed in the same LiveView, then it’s probably a good idea to break it into separate LiveViews.

At first we could delegate handle_events to LiveComponents (phx-target={@myself}) but, for example handle_info is still need to be in parent LiveView