Ocioso

Micro Library for initialize variables in your ruby objects.

Installation

Installing Ocioso is as simple as running:

$ gem install ocioso

Include Ocioso in your Gemfile with gem 'ocioso' or require it with require 'ocioso'.

Usage

You can automatically instance variables without write an initialize method, just send a hash with your name variables and its values when you instantiate a class.

class User
  include Ocioso
end

user = User.new name: "Julio", email: "julio@email.com"

# This is the same thing of do:
# class User
#   def initialize(name, email)
#     @name = name
#     @email = email
#   end
# end

puts user.inspect
#=> <User @name = "Julio", @email = "julio@email.com">

If you define your writer methods you can initialize your variables using a block:

class User
  include Ocioso
  attr_writer :name, :email
end

user = User.new do |user|
         user.name = "Julio"
         user.email = "julio@email.com"
       end

puts user.inspect
#=> <User @name = "Julio", @email = "julio@email.com">

Allow certain Values

If you want to only allow some certain variables, you can use initialize_only_with method. Other sent variables that haven't been specified won't be initializated.

class User
  include Ocioso
  initialize_only_with :name, :email
end

user = User.new name: "Julio", email: "julio@email.com", age: 25
puts user.inspect
#=> <User @name = "Julio", @email = "julio@email.com">

Default Values

You can define your default values for your instance variables using the initialize_defaults method.

class User
  include Ocioso
  initialize_defaults name: "Julio", email: "my_email@email.com"
end

# This is the same thing of do:
# class User
#   def initialize(name = "Julio", email = "my_email@email.com")
#     @name = name
#     @email = email
#   end
# end

user = User.new
puts user.inspect
#=> <User @name = "Julio", @email = "my_email@email.com">

other_user = User.new name: "Piero"
puts other_user.inspect
#=> <User @name = "Piero", @email = "my_email@email.com">

Open to Initialize

You can still use your initialize method to do whatever you need, just not forget to send the super method to handle the initialize of Ocioso.

class User
  include Ocioso
  def initialize(*args)
    super(*args)
    #doing whatever
  end
end