From 92c5f5f8a722ac1c2988aa439b9dd44ec0d5ff59 Mon Sep 17 00:00:00 2001
From: Mathias Wingert <mathiaswingert@gmail.com>
Date: Mon, 30 Sep 2024 15:58:20 +0200
Subject: [PATCH] feature: Reload episodes after creating a new or updating an
 existing episode

---
 lib/radiator/podcast.ex                     | 17 +++++++++++++++++
 lib/radiator_web/live/episode_live/index.ex |  8 ++++++++
 2 files changed, 25 insertions(+)

diff --git a/lib/radiator/podcast.ex b/lib/radiator/podcast.ex
index f4c60b19..17774eb4 100644
--- a/lib/radiator/podcast.ex
+++ b/lib/radiator/podcast.ex
@@ -234,6 +234,23 @@ defmodule Radiator.Podcast do
     Show.changeset(show, attrs)
   end
 
+  @doc """
+  A forced reload of preloaded associations.
+  Usefull when only the associations have changed and Show does need to be reloaded.
+
+  ## Examples
+
+      iex> reload_assoc(%Show{}, :episodes)
+      %Show{}
+
+      iex> reload_assoc(%Show{}, (from e in Episode, where: e.show_id == ^show_id, order_by: [desc: e.number]))
+      %Show{}
+
+  """
+  def reload_assoc(%Show{} = show, fields_or_query) do
+    Repo.preload(show, fields_or_query, force: true)
+  end
+
   @doc """
   Returns the list of episodes.
 
diff --git a/lib/radiator_web/live/episode_live/index.ex b/lib/radiator_web/live/episode_live/index.ex
index e1fbb8e0..331113da 100644
--- a/lib/radiator_web/live/episode_live/index.ex
+++ b/lib/radiator_web/live/episode_live/index.ex
@@ -120,7 +120,11 @@ defmodule RadiatorWeb.EpisodeLive.Index do
           "episode_id" => episode.id
         })
 
+        show = Podcast.reload_assoc(socket.assigns.show, [:episodes])
+
         socket
+        |> assign(:show, show)
+        |> assign(:episodes, show.episodes)
         |> put_flash(:info, "Episode created")
         |> push_patch(to: ~p"/admin/podcast/#{socket.assigns.show}/#{episode}")
         |> reply(:noreply)
@@ -133,7 +137,11 @@ defmodule RadiatorWeb.EpisodeLive.Index do
   defp save_episode(socket, :edit, params) do
     case Podcast.update_episode(socket.assigns.episode, params) do
       {:ok, episode} ->
+        show = Podcast.reload_assoc(socket.assigns.show, [:episodes])
+
         socket
+        |> assign(:show, show)
+        |> assign(:episodes, show.episodes)
         |> put_flash(:info, "Episode updated")
         |> push_patch(to: ~p"/admin/podcast/#{socket.assigns.show}/#{episode}")
         |> reply(:noreply)