导轨 - 验证

Question

我使用的经过date_select帮手date_select帮手PARAMS，如：

date_of_birth(1i) 
date_of_birth(2i) 
date_of_birth(3i) 

我想用validates_presence_of验证，但返回时毛坯从下拉菜单中选择以下错误：

You have a nil object when you didn't expect it! 
You might have expected an instance of Array. 
The error occurred while evaluating nil.empty? 

Answer 1

看起来像jQuery是我的正确解决方案。 :)