复杂表单嵌套在Rails中 – 如何创建所需的哈希/数组参数输出

我试图弄清楚如何正确处理params哈希，因为我不传递应该嵌套多次的params ..

这是我的html.slim代码的简化（删除不需要的信息，如标签等）（使用simple_form）：

= f.simple_fields_for :room do |r| - (1..4).each do |room| = r.input 'adults',:collection => 1..4,:input_html => {:name => "room[adults][]"} = r.input 'children',:collection => 0..2,:input_html => {:name => "room[children][]"} - (1..2).each do |child| = r.input 'child_age',:input_html => {:name => "children[#{child}][ages][]"} 

好吧这个输入1个房间，1个成人，1个5岁的孩子我们得到这样的参数：

 "room"=>{"adults"=>["1", "1", "1", "1"], "children"=>["1", "0"]}, "children"=>{"1"=>{"ages"=>["5", ""]}, "2"=>{"ages"=>["", ""]}} 

我真正想要的对象是：

 "room"=>{"adults"=>["1", "1", "1", "1"], "children"=>["1"=>["5",""], "0"=>["",""]] } 

有人知道怎么做吗？

Answer 1

对不起，我不知道simple_form是如何工作的，但是这里是我用普通的rails帮助器做的。

 <%= f.fields_for :rooms, (rooms_collection) do |r| %> ... # Any inputs you may want <%= r.fields_for :children, (children_collection) do |c| %> <%= c.text_field :child_age %> 

这不会给你你想要的确切输入，但它会给你一些类似的东西

 "room"=>{"adults"=>["1", "1", "1", "1"], "children"=>{"0"=>{child_age => ["5",""]}, "1"=>{child_age => ["",""]}}} 

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或者，如果你没有持久化对象，这应该可行

 <%= f.fields_for :rooms do |r| %> ... # Any inputs you may want (1..2).each do <%= r.fields_for :children do |c| %> <%= c.text_field :child_age %>