hacks.ex

# don't attempt to sign in nil credentials at all
def create(conn, %{"session" => %{"login" => nil }}), do: nil
def create(conn, %{"session" => %{"password" => nil }}), do: nil

def create(conn, %{"session" => session_params}) do
      member = Repo.one(
        from w in Member,
        where: w.email == ^session_params["login"]
        or w.username == ^session_params["login"]
      )
    sign_in(conn, member, session_params["password"])
end