+
+ def try_render(conn, target, params) when is_binary(target) do
+ case render(conn, target, params) do
+ nil -> render_error(conn, :not_implemented, "Can't display this activity")
+ res -> res
+ end
+ end
+
+ def try_render(conn, _, _) do
+ render_error(conn, :not_implemented, "Can't display this activity")
+ end
+
+ @spec put_if_exist(map(), atom() | String.t(), any) :: map()
+ def put_if_exist(map, _key, nil), do: map
+
+ def put_if_exist(map, key, value), do: Map.put(map, key, value)