Functional Programming: A PragPub Anthology

Registering Templates and Prototypes with Forge

You’ll register each data template in a module usually called Forge. This is a template for a Person. Notice the Faker framework that we use to fake individual elements:

~~~
defmodule Forge do
  use Blacksmith
  register :user,
    first_name: Faker.Name.first_name,
    last_name: Faker.Name.last_name,
    email: Sequence.next(:email, &"test#{&1}@example.com")


  register :admin,
    [prototype: user],
    roles: ["admin"]
end
~~~

We’re registering each type of entity in our Forge module. The first entry registers users. The Faker library supplies plausible values for first_name and last_name. We use a sequence to create an email so that each email for a new user will be unique. Blacksmith registers ...