使用attr_encrypted生成相同密文的唯一IV

Using the most basic setup:

使用最基本的设置：

class User < ActiveRecord::Base
  attr_encrypted :name, 
                 key: 'This is a key that is 256 bits!!', 
                 encode: true, 
                 encode_iv: true, 
                 encode_salt: true
end
class