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Contents
module ActiveRecord
module ModelTranslations
module ClassMethods
def translates(*attributes)
add_translation_model_and_logic unless included_modules.include?(InstanceMethods)
add_translatable_attributes(attributes)
end
private
def add_translation_model_and_logic
type = self.to_s.underscore
translation_class_name = "#{self.to_s}Translation"
translation_class = Class.new(ActiveRecord::Base) { belongs_to type.to_sym }
Object.const_set(translation_class_name, translation_class)
include InstanceMethods
has_many :model_translations, :class_name => translation_class_name, :dependent => :delete_all , :order => 'created_at desc'
after_save :update_translations!
end
def add_translatable_attributes(attributes)
attributes = attributes.collect{ |attribute| attribute.to_sym }
attributes.each do |attribute|
define_method "#{attribute}=" do |value|
translated_attributes[attribute] = value
end
define_method attribute do
return translated_attributes[attribute] if translated_attributes[attribute]
return nil if new_record?
translation = model_translations.detect { |t| t.locale == I18n.locale.to_s } ||
model_translations.detect { |t| t.locale == I18n.default_locale.to_s } ||
model_translations.first
translation ? translation[attribute] : nil
end
end
end
end
module InstanceMethods
def translated_attributes
@translated_attributes ||= {}
end
def update_translations!
return if translated_attributes.blank?
translation = model_translations.find_or_initialize_by_locale(I18n.locale.to_s)
translation.attributes = translation.attributes.merge(translated_attributes)
translation.save!
end
end
end
end
Version data entries
15 entries across 15 versions & 1 rubygems