Refactoring Episode Controller

episode_controller.ex

  def new(conn, %{"podcast_slug" => slug}, current_user) do
    with podcast <- find_podcast_for_user(slug, current_user.id),
         changeset <- build_episode(podcast) do
      render(conn, :new, changeset: changeset, podcast: podcast)
    else
      _ -> redirect(conn, to: page_path(conn, :index))
    end
  end