軌通用fields_for - 強迫孩子指數

Question

型號

class Person < AR 

end 

控制器

def new 
    @people = [] 
    3.times {@people << Person.new) 
end 

查看

=form_tag :people_form do 
-@people.each_with_index do |person, i| 
    =fields_for :person, person do |person_fields| 
    =person_fields.text_field :name 

這是有點明顯，這將產生對每個人相同的HTML（ name = people_form [person] [name]）。有沒有一種方法可以讓它插入索引，因此每個人都是唯一的索引？ （沒有javacript hack）。

例如這將是很好，如果我能得到它的產生是這樣的：

<input name='people_form[0][name]' /> 
<input name='people_form[1][name]' /> 

Answer 1

簡單的比你想象的

=form_tag :people_form do 
-@people.each_with_index do |person, i| 
    =fields_for "people_form[#{i}]", person do |person_fields| 
    =person_fields.text_field :name