ferne/lib/ferne/repo.ex

defmodule Ferne.Repo do
  use Ecto.Repo,
    otp_app: :ferne,
    adapter: Ecto.Adapters.Postgres

  require Ecto.Query

  def count(query) do
    one(Ecto.Query.from(r in query, select: count(r.id)))
  end
end