Extract apply_fallback_index to shared helper

Closes #92

lib/music_library_web/live/collection_live/index.ex

@@ -202,14 +202,14 @@ defmodule MusicLibraryWeb.CollectionLive.Index do
 
   defp apply_action(socket, :import, params) do
     socket
-    |> apply_fallback_index(params)
+    |> apply_fallback_index(params, :records, &apply_action/3)
     |> assign(:page_title, gettext("Add new Record · Collection"))
     |> assign(:record, nil)
   end
 
   defp apply_action(socket, :barcode_scan, params) do
     socket
-    |> apply_fallback_index(params)
+    |> apply_fallback_index(params, :records, &apply_action/3)
     |> assign(:page_title, gettext("Scan barcodes · Collection"))
     |> assign(:record, nil)
   end
@@ -218,7 +218,7 @@ defmodule MusicLibraryWeb.CollectionLive.Index do
     record = Records.get_record!(id)
 
     socket
-    |> apply_fallback_index(params)
+    |> apply_fallback_index(params, :records, &apply_action/3)
     |> assign(:page_title, Show.page_title(socket.assigns.live_action, record))
     |> assign(:record, record)
   end
@@ -237,15 +237,6 @@ defmodule MusicLibraryWeb.CollectionLive.Index do
     load_and_assign_records(socket, record_list_params)
   end
 
-  def apply_fallback_index(socket, params) do
-    if get_in(socket.assigns, [:streams, :records]) == nil do
-      socket
-      |> apply_action(:index, params)
-    else
-      socket
-    end
-  end
-
   @impl true
   def handle_info({MusicLibraryWeb.Components.RecordForm, {:saved, _record}}, socket) do
     {:noreply, load_and_assign_records(socket, socket.assigns.record_list_params)}