+ # Note: not checking activity type (assuming non-legacy objects are associated with Create act.)
+ defp maybe_handle_hashtags_change(changeset, struct) do
+ with %Ecto.Changeset{valid?: true} <- changeset,
+ data_hashtags_change = get_change(changeset, :data),
+ {_, true} <- {:changed, hashtags_changed?(struct, data_hashtags_change)},
+ {:ok, hashtag_records} <-
+ data_hashtags_change
+ |> object_data_hashtags()
+ |> Hashtag.get_or_create_by_names() do
+ put_assoc(changeset, :hashtags, hashtag_records)
+ else
+ %{valid?: false} ->
+ changeset
+
+ {:changed, false} ->
+ changeset
+
+ {:error, _} ->
+ validate_change(changeset, :data, fn _, _ ->
+ [data: "error referencing hashtags"]
+ end)
+ end
+ end
+
+ defp hashtags_changed?(%Object{} = struct, %{"tag" => _} = data) do
+ Enum.sort(embedded_hashtags(struct)) !=
+ Enum.sort(object_data_hashtags(data))
+ end
+
+ defp hashtags_changed?(_, _), do: false
+