導軌 - 驗證

Question

我使用的經過date_select幫手date_select幫手PARAMS，如：

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

我想用validates_presence_of驗證，但返回時毛坯從下拉菜單中選擇以下錯誤：

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

看起來像jQuery是我的正確解決方案。 :)