ruby-on-rails-3 – Rails 3多模型表单,包含多个子模型的新实例

class Parent < ActiveRecord::Base
  has_many :children
  accepts_nested_attributes_for :children
end

class Child < ActiveRecord::Base
  belongs_to :parent
  has_many :other_children
  accepts_nested_attributes_for :other_children
end

class OtherChild < ActiveRecord::Base
  belongs_to :child
end

= form_for @parent do |f|
  # fields for parent
  = f.fields_for :children,@parent.children do |cf|
    = cf.fields_for :other_children,@parent.children do |ocf|
      # fields_for other child
    = cf.fields_for :other_children,@parent.children.new do |ocf|
      # fields_for other child

这有效,除非我通过jquery复制第二组子字段.更清楚的是,带有新的other_child模型的fields_for有一个创建按钮,它触发一些jquery,例如$(new_child_form).clone().insertBefore($(new_child_form))允许在同一个中添加多个子模型表格提交.我知道我可以通过ajax单独提交每个子表单,但这不是我想要的.

Rails获得多个父[children_attributes] [0] [other_children_attributes] [1]并且似乎只使用最后一个.有任何想法吗？