Question

I often see code of the form

RSpec.configure do |config|
  config.include ApiHelper

  # ## Mock Framework
  #
  # If you prefer to use mocha, flexmock or RR, uncomment the appropriate line:
  #
  # config.mock_with :mocha
  # config.mock_with :flexmock
  # config.mock_with :rr

  # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
  config.fixture_path = "#{::Rails.root}/spec/fixtures"

  # If you're not using ActiveRecord, or you'd prefer not to run each of your
  # examples within a transaction, remove the following line or assign false
  # instead of true.
  config.use_transactional_fixtures = true

  # If true, the base class of anonymous controllers will be inferred
  # automatically. This will be the default behavior in future versions of
  # rspec-rails.
  config.infer_base_class_for_anonymous_controllers = false

  config.include FactoryGirl::Syntax::Methods

end

Is there a feature in Rails that lets me do something similar? I want to be able to configure my own library with a similar syntax within config/initializers/my_class.rb

MyClass.configure do |config|
  # allow configuration here
end

Answer 1

i don’t know if rails provides a helper for that, but i wrote my own tiny solution for this problem that i use in several gems: https://github.com/phoet/confiture

it let’s you define configurations:

module Your
  class Configuration
    include Confiture::Configuration

    confiture_allowed_keys(:secret, :key)
    confiture_defaults(secret: 'SECRET_STUFF', key: 'EVEN_MOAR_SECRET')
  end
end

and have an easy api to do the configuration:

Your::Configuration.configure do |config|
  config.secret = 'your-secret'
  config.key    = 'your-key'
end

besides this, there are a lot of other config tools out there like configatron or simpleconfig.