Postgrex.Extension and Ecto.Type for PostgreSQL isn module

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README.md

ISN

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

Usage

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

Installation

Add the package to your Mixfile

defp deps do
  [{:isn, "~> 2.0"}]
end

Add the isn extension to your database

mix do isn.gen.migration, ecto.migrate

Add a lib/postgrex_types.ex file with the following content:

Postgrex.Types.define(MyApp.PostgrexTypes, [ISN], [])

Add the following lines in config.exs:

config :my_app, MyApp.Repo,
  types: MyApp.PostgrexTypes

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`