ISN

ISN adds a Postgrex.Extension and Ecto.Type definitions for the datatypes defined in the isn PostgreSQL module.

Ecto migrations

defmodule MyApp.Repo.Migrations.CreateBook do
  use Ecto.Migration

  def change do
    create table(:books) do
      add :isbn, :isbn13
      # other fields
    end
  end
end

Ecto Models

defmodule MyApp.Book do
  use MyApp.Web, :model

  schema "books" do
    field :isbn, ISN.ISBN13, read_after_writes: true
    # other fields
  end
end

Defined types

ISN adds the following ecto and corresponding postgrex types:

Ecto.Type	Postgrex type
ISN.ISBN	:isbn
ISN.ISBN13	:isbn13
ISN.ISMN	:ismn
ISN.ISMN13	:ismn13
ISN.ISSN	:issn
ISN.ISSN13	:issn13
ISN.EAN13	:ean13
ISN.UPC	:upc