ruby-on-rails-3 – Rails 3 – 嵌套模型 – has_many – jquery

我使用RAILS 3.2.9,nested_form,carrierwave和jquery-fileupload-rails gem和ryan bates railscasts作为指南.

所有似乎都设置正确,但问题是,当用户选择照片(触发fileupload()函数)时,会创建新的Post和新的Photo记录.一旦我按下“创建帖子”,就会再次创建另一个帖子记录.

任何帮助/想法表示赞赏.

非常感谢你.

切赫

class Post < ActiveRecord::Base
  has_many :photos,as: :attachable,:dependent => :destroy
  accepts_nested_attributes_for :photos,:allow_destroy => true
end

class Photo < ActiveRecord::Base
  belongs_to :attachable,polymorphic: true
  attr_accessible :image,:description,:post_id,:attachable_id,:attachable_type
  mount_uploader :image,PhotoUploader
end


# Post Controller
def create
  @post = Post.new(params[:post])
  @post.save
end


# _form.html.erb
<%= nested_form_for @post,:html => { :multipart => true } do |f| %>
  <%= f.fields_for :photos do |photo| %>
    <% if photo.object.new_record? %>
      <%= photo.file_field :image,id: "fileupload" %>
      <%= photo.hidden_field :id %>
      <%= photo.hidden_field :attachable_id %>
      <%= photo.hidden_field :attachable_type %>
    <% else %>
      <%= image_tag(photo.object.image.url(:thumb)) %>
      <%= photo.check_box :_destroy %>
    <% end %>
  <% end %>
<% end %>

#application.js
$('#fileupload').fileupload();