From 43678cfc05276c0ede88b1f60663f048ff57ee36 Mon Sep 17 00:00:00 2001
From: Rafael Scheffer <rafael@nash.io>
Date: Wed, 28 Oct 2020 10:34:51 -0300
Subject: [PATCH] Support casting association list (#9)

---
 lib/paper_trail/serializer.ex | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/lib/paper_trail/serializer.ex b/lib/paper_trail/serializer.ex
index b403d117..22081954 100644
--- a/lib/paper_trail/serializer.ex
+++ b/lib/paper_trail/serializer.ex
@@ -117,11 +117,19 @@ defmodule PaperTrail.Serializer do
     |> List.first()
   end
 
-  @spec serialize(nil | Ecto.Changeset.t() | struct, options, String.t()) :: nil | map
+  @spec serialize(
+          nil | Ecto.Changeset.t() | struct() | [Ecto.Changeset.t() | struct()],
+          options(),
+          String.t()
+        ) :: nil | map() | [map()]
   def serialize(model, options, event \\ "insert")
 
   def serialize(nil, _options, _event), do: nil
 
+  def serialize(list, options, event) when is_list(list) do
+    Enum.map(list, &serialize(&1, options, event))
+  end
+
   def serialize(
         %Ecto.Changeset{data: %schema{}, changes: changes},
         options,