Class: ActiveRecord::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/ext/active_record_ext.rb

Direct Known Subclasses

RailsDbLocalize::Translation

Class Method Summary collapse

Class Method Details

.has_translations(*fields) ⇒ Object 



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# File 'lib/ext/active_record_ext.rb', line 4

def has_translations *fields

  unless @__rdbl_translations
    @__rdbl_translations = true
    # Register it mostly to remove the translations once you delete an object
    self.has_many :translations, as: :resource, dependent: :destroy
  end

  fields.each do |field|
    # Add a marker to the schema of the application translations.
    RailsDbLocalize::add_to_schema(self, field)

    # Not sure if I would have to put dependent: :destroy here.
    self.has_many :"#{field}_translations", -> { where(field: field)  }, as: :resource

    # Making the magic happends.
    # I should really learn how to use the Reflection helpers in ActiveRecord, because
    # ruby eval is not the most readable stuff... :o)
    self.class_eval <<-CODE, __FILE__, __LINE__ + 1
      def #{field}_translated (lang=nil)
        lang ||= I18n.locale
        RailsDbLocalize::TranslationCache.instance.get_translation_for(self.class, self.id, "#{field}", lang, self.#{field} )
      end

      def #{field}_translated= args
        if args.is_a?(Array)
          value, lang = args
        else
          value = args
          lang = I18n.locale
        end

        if self.id
          translated = RailsDbLocalize::Translation.where(
            resource_type: self.class.to_s, resource_id: self.id,  field: "#{field}", lang: lang
          ).first_or_create

          translated.content = value

          translated.save!
        else
          translations.build field: "#{field}", lang: lang, content: value
        end
      end
    CODE
  end
end