philomena/lib/philomena_web/views/user_attribution_view.ex
2019-11-11 11:56:34 -05:00

19 lines
492 B
Elixir

defmodule PhilomenaWeb.UserAttributionView do
alias Philomena.Attribution
use Bitwise
use PhilomenaWeb, :view
def anonymous_name(object) do
salt = anonymous_name_salt()
id = Attribution.object_identifier(object)
user_id = Attribution.best_user_identifier(object)
(:erlang.crc32(salt <> id <> user_id) &&& 0xffff)
|> Integer.to_string(16)
end
defp anonymous_name_salt do
Application.get_env(:philomena, :anonymous_name_salt)
|> to_string()
end
end