def set_translations(options)
      options.keys.each do |locale|
        translation = translation_for(locale) || translations.build(:locale => locale.to_s)
        translation.update_attributes!(options[locale])
      end
    end
def set_translations(options)
      options.keys.each do |locale|
        translation = translation_for(locale) || translations.build(:locale => locale.to_s)
        translation.update_attributes!(options[locale])
      end
    end
Updates fields separately for each given locale
     post.set_translations(
       :en => { :title => "updated title" },
       :de => { :content => "geänderter Inhalt" }
     )
 Param: Hash, where keys are locales and values are Hashes of name-value
 pairs for fields.