我阅读本教程： HTTP ：//sleekd.com/general/adding-multiple-images-to-a-rails-model-with-paperclip/  因为我需要保存的产品图片在独立的模型。然而，当Product.create执行鸵鸟政策保存的产品图片模型的数据。

注：我用的是新包装的动作，因为我需要使用Ajax为创建新产品

请我需要帮助。

我的code

控制器

 类管理:: PacksController＆LT;的ApplicationController
      高清新
        @pack = Pack.new
        @product = Product.new
        4.times {@ product.product_images.build}＃添加了此
        respond_to代码做|格式|
          的format.html＃new.html.erb
          format.xml {渲染：XML =＆GT; @包 }
        结束
      结束

      高清create_starred_product
        产品= Product.new（PARAMS [：产品】）
        product.save
...

      结束
 

查看

 ＆LT;％form_remote_for @product，：URL =＆GT; {：控制器=＆GT; 产品，：操作=＆GT; create_starred_product}：HTML =＆GT; {：多部分=＆GT;真}做| F | ％＆GT;
      ＆LT; D​​IV ID =内容＆GT;
....＃其他范畴的产物。 ITS Save方法确定
        ＆LT; D​​IV ID =照片选择器＆GT;
          ＆LT;跨度类=fleft＆GT;Imágenes＆LT; / SPAN＆GT;＆LT; BR /＆GT;
          ＆所述;％计数= 0％GT;
          ＆LT;％f.fields_for：product_images办|制造商| ％＆GT;

              ＆LT;％如果builder.object.new_record？ ％＆GT;
                  ＆LT;标签＆gt;
                    IMAGEN＆LT;％=＃{数=计数+ 1}％＆GT;
                  ＆LT; /标签＆gt;
                  ＆LT;％= builder.file_field：照片，：类=＆GT; 文本区域 - ％＆GT;＆LT; BR /＆GT;
              ＆LT;％结束％GT;
          ＆LT;％结束％GT;
        ＆LT; / DIV＆GT;
        ＆其中p为H.;＆其中;％= f.submitCREAR％＆GT;＆所述; / P＆GT;
      ＆LT; / DIV＆GT;
  ＆LT;％结束％GT;
 

模式

 类产品＆LT;的ActiveRecord :: Base的
  的has_many：包：通过=＆GT; ：pack_products
  的has_many：product_images，：依赖=＆GT; ：破坏
  ＃回形针
  accepts_nested_attributes_for：product_images，：reject_if =＆GT;拉姆达{| T | T ['product_image']。空白？ }
结束

类ProductImage＆LT;的ActiveRecord :: Base的
  belongs_to的：产品
  has_attached_file：照片，：URL =＆GT; /:attachment/:class/:id/:style_:basename.:extension：风格=＆GT; {：中等=＆GT; 300×300＆gt;中，：拇指=＆​​GT; 100×100＆gt;中，：小=＆GT; 30×30＆gt;中}
结束
 

解决方案

您无法上传使用AJAX的文件，就像你说的。有，但是，替代解决方案。

的常用技术来完成，这是一iframe的用法。看看此处，本教程是面向attachment_fu但它会用回形针正常工作。 Uploadify 是值得一试，也可以用曲别针上的导轨2.3 和的轨道3 。

I am reading this tutorial : http://sleekd.com/general/adding-multiple-images-to-a-rails-model-with-paperclip/ because i need Save the product images in a independent model. However when Product.create execute don´t save the data for product images model.

NOTE: I use the new pack action because i need to use ajax for create a new product.

Please I need Help.

My Code

Controllers

    class Admin::PacksController < ApplicationController
      def new
        @pack = Pack.new
        @product = Product.new
        4.times {@product.product_images.build} # added this
        respond_to do |format|
          format.html # new.html.erb
          format.xml  { render :xml => @pack }
        end
      end

      def create_starred_product
        product = Product.new(params[:product])
        product.save
...

      end

View

<% form_remote_for @product, :url => {:controller => "products", :action => "create_starred_product"}, :html => {:multipart => true} do |f| %>
      <div id="content">
....#OTHER FIELDS OF PRODUCT. ITS SAVE METHOD IS OK
        <div id="images-selector">
          <span class="fleft">Imágenes</span><br/>
          <% count = 0 %>
          <% f.fields_for :product_images do |builder| %>

              <% if builder.object.new_record? %>
                  <label>
                    Imagen <%= "#{count = count + 1}" %>
                  </label>
                  <%= builder.file_field :photo, :class => "textarea" -%><br/>
              <% end %>
          <% end %>
        </div>
        <p><%= f.submit "Crear" %></p>
      </div>
  <% end %>

Models

class Product < ActiveRecord::Base
  has_many :packs, :through => :pack_products
  has_many :product_images, :dependent => :destroy
  #PAPERCLIP
  accepts_nested_attributes_for :product_images, :reject_if => lambda { |t| t['product_image'].blank? }
end

class ProductImage < ActiveRecord::Base
  belongs_to :product
  has_attached_file :photo, :url => "/:attachment/:class/:id/:style_:basename.:extension", :styles => { :medium => "300x300>", :thumb => "100x100>", :small => "30x30>" }
end  

You can't upload files using AJAX, just like you said. There are, however, alternate solutions.

The common technique to accomplish this is the usage of an iframe. Have a look here, this tutorial is oriented towards attachment_fu but it'll work with paperclip as well. Uploadify is worth checking out and can also be used with paperclip on rails 2.3 and rails 3.