DSL for building class initializer with params and options.
Add this line to your application's Gemfile:
gem 'dry-initializer'
And then execute:
$ bundle
Or install it yourself as:
$ gem install dry-initializer
require 'dry-initializer'
require 'dry-types'
class User
extend Dry::Initializer::Mixin
# Params of the initializer along with corresponding readers
param :name, proc(&:to_s)
param :role, default: -> { 'customer' }
# Options of the initializer along with corresponding readers
option :admin, default: -> { false }
option :vip, optional: true
end
# Defines the initializer with params and options
user = User.new 'Vladimir', 'admin', admin: true
# Defines readers for single attributes
user.name # => 'Vladimir'
user.role # => 'admin'
user.admin # => true
user.vip # => Dry::Initializer::UNDEFINED
See full documentation on the Dry project official site
The dry-initializer
is pretty fast for rubies 2.2+ comparing to other libraries.
Tested under rubies compatible to MRI 2.2+.
- Fork the project
- Create your feature branch (
git checkout -b my-new-feature
) - Add tests for it
- Commit your changes (
git commit -am '[UPDATE] Add some feature'
) - Push to the branch (
git push origin my-new-feature
) - Create a new Pull Request
The gem is available as open source under the terms of the MIT License.