Rails3：form_for/simple_form_for記錄值

Question

如何從表單對象（@ banner.name）讀取記錄參數？

= simple_form_for @banner |f| 
    = f.name 
    ... 
    = f.simple_fields_for :params do |o| 
    = o.name ???? 
    = o.created_at ???? 

Answer 1

嘗試這種方式

= simple_form_for @banner |f| 
    = f.input :name 
    ... 
    = f.simple_fields_for :params do |o| 
    = o.input :name 
    = o.input :created_at, :as => :date 

但我不知道爲什麼你需要created_at的輸入。無論如何，與實施例中的文檔是在their Github page

爲了只顯示值有一個object方法

= simple_form_for @banner |f| 
    = f.object.name 
    ... 
    = f.simple_fields_for :params do |o| 
    = o.object.name 
    = o.object.created_at.strftime('%x %X') # strftime just to format