Sow.Wrapper (Sow v0.1.4)

Create custom wrapper modules with shared helpers for fixtures.

Defining a Wrapper

defmodule MyApp.Fixtures do
  use Sow.Wrapper

  # Default options for all fixtures using this wrapper
  # Can be overridden by individual fixtures
  def __sow_defaults__, do: []

  # Custom helpers available in all fixtures
  def org_id(slug), do: MyApp.Repo.get_by!(MyApp.Org, slug: slug).id
  def image_url(path), do: "https://cdn.example.com/#{path}"
end

Using the Wrapper

defmodule MyApp.Fixtures.Products do
  use MyApp.Fixtures, schema: MyApp.Product, keys: [:slug]

  def records do
    [
      %{
        slug: "widget",
        org_id: org_id("acme"),           # helper from wrapper
        image: image_url("widget.png")     # helper from wrapper
      }
    ]
  end
end

With Default Options

defmodule MyApp.Fixtures do
  use Sow.Wrapper

  # Set defaults for all fixtures
  def __sow_defaults__ do
    [callback: :seed_data]
  end
end

defmodule MyApp.Fixtures.Countries do
  use MyApp.Fixtures, schema: MyApp.Country, keys: [:code]

  # Uses :seed_data callback by default
  def seed_data do
    [%{code: "NO", name: "Norway"}]
  end
end