How to normalize function params

[sasajuric]

@stefanchrobot

As mentioned in the article, the author is suggesting using Ecto’ schemaless changesets for this . I think the normalize function can be written in a pretty generic way.

Yes, on both accounts. I can’t share the code (it’s owned by the clients), but the basic take is something like

def normalize(data, types) do
  {%{}, types}
  |> Ecto.Changeset.cast(data, Map.keys(types))
  |> Ecto.Changeset.apply_action(:insert)
end

This is probably not enough (e.g. you may want to handle nils and missing keys), but it’s a solid start.