add episode reference id to nodes

currently it is optional but it should be required

lib/radiator/outline/node.ex

@@ -5,6 +5,7 @@ defmodule Radiator.Outline.Node do
   """
   use Ecto.Schema
   import Ecto.Changeset
+  alias Radiator.Podcast.Episode
 
   @derive {Jason.Encoder, only: [:uuid, :content, :creator_id, :parent_id, :prev_id]}
 
@@ -15,6 +16,8 @@ defmodule Radiator.Outline.Node do
     field :parent_id, Ecto.UUID
     field :prev_id, Ecto.UUID
 
+    belongs_to :episode, Episode
+
     timestamps(type: :utc_datetime)
   end
 
@@ -25,7 +28,8 @@ defmodule Radiator.Outline.Node do
   @optional_fields [
     :creator_id,
     :parent_id,
-    :prev_id
+    :prev_id,
+    :episode_id # FIXME: should be required
   ]
 
   @all_fields @optional_fields ++ @required_fields

priv/repo/migrations/20231216182723_add_outline_reference_to_episode.exs

@@ -0,0 +1,9 @@
+defmodule Radiator.Repo.Migrations.AddOutlineReferenceToEpisode do
+  use Ecto.Migration
+
+  def change do
+    alter table(:outline_nodes) do
+      add :episode_id, references(:episodes, on_delete: :nothing)
+    end
+  end
+end

test/support/fixtures/outline_fixtures.ex

@@ -3,16 +3,20 @@ defmodule Radiator.OutlineFixtures do
   This module defines test helpers for creating
   entities via the `Radiator.Outline` context.
   """
-
+  alias Radiator.PodcastFixtures
   @doc """
   Generate a node.
   """
   def node_fixture(attrs \\ %{}) do
+    episode = PodcastFixtures.episode_fixture()
+
     {:ok, node} =
       attrs
-      |> Enum.into(%{content: "some content"})
+      |> Enum.into(%{
+        content: "some content",
+        episode_id: episode.id
+      })
       |> Radiator.Outline.create_node()
-
     node
   end
 end