不就是個blog

ActiveRecord的欄位驗證訊息是英文，要改成其它語言，可以覆寫ActiveRecord:: Errors.default_error_messages定義的訊息，如此，就不需要在每個用到validates_*_of的地方加上: message參數。直接在environment.rb加入：

ActiveRecord::Errors.default_error_messages = {
  :inclusion => "不是選項之一",
  :exclusion => "已被保留",
  :invalid => "是無效的",
  :confirmation => "與確認值不符",
  :accepted  => "必需被接受",
  :empty => "不能是空的",
  :blank => "不能是空白",
  :too_long => "太長(最多%d個字)",
  :too_short => "太短(至少%d個字)",
  :wrong_length => "長度不對(必須%d個字)",
  :taken => "已被使用",
  :not_a_number => "不是數字" 
}