Translatable String

	class TranslatedString
	def initialize(owner, key)
	@owner, @key = owner, key
	end
	def [](lang)
	@owner.get_translated_value(@key, lang)
	end
	def to_h
	@owner.translated_values[@key]
	end
	def []=(lang, value)
	@owner.set_translated_value(@key, value, lang)
	end
	end
	class Product
	module Translatable
	def translated_values
	@translated_values ||= {}
	end
	def value_of_translated(key)
	translated_values[key] ||= {}
	end
	def get_translated_value(key, lang = default_locale)
	value_of_translated(key)[lang]
	end
	def set_translated_value(key, value, lang = default_locale)
	if value.is_a? Hash
	value.each {|lang, value| value_of_translated(key)[lang] = value}
	else
	value_of_translated(key)[lang] = value
	end
	end
	def get_translated_string(key)
	instance_variable_set("@#{key}", TranslatedString.new(self, key)) unless instance_variable_get("@#{key}")
	instance_variable_get("@#{key}")
	end
	def set_translated_string(key, value)
	get_translated_string(key)[default_locale] = value
	end
	end
	end
	class Product
	include Translatable
	def default_locale
	:en_AU
	end
	def description
	get_translated_string(:description)
	end
	def description=(value)
	set_translated_string(:description, value)
	end
	end
	product = Product.new
	product.description[:en] = 'foo'
	product.description = "foo"
	product.description = {en_AU: "description", el_GR: "περιγραφή"}
	product.description.to_h

view raw gistfile1.rb hosted with ❤ by GitHub