Ruby on rails - paperclip没有保存到数据库

Question

我正在尝试在rails中创建一个创建产品页面.这包括添加多个图像.我有一个产品模型,一个用于照片和用户.我正在使用paperclip gem进行照片上传.但我有两个问题.

1. 我的文件输入并不让我选择多个图像
2. 当我查看产品时没有图片显示,因为图片没有保存到数据库

PS我使用HAML而我没有照片控制器.

产品控制器

class ProductsController < ApplicationController
    before_filter :current_user, only: [:create, :destory]
    before_filter :correct_user, only: :destory

  def new 
@product = Product.new
    @photo = Photo.new
    5.times { @product.photos.build }
  end

  def create

  @photo = current_user.photos.build(params[:photo])

  @product = current_user.products.build(params[:product])
    if @product.save
        render "show", :notice => "Sale created!"
    else
        render "new", :notice => "Somehting went wrong!"
    end
end

def show
@product = Product.find(params[:id]) 
end

创建产品页面

= form_for @product, :html => { :multipart => true } do |f|
  - if @product.errors.any?
    .error_messages
      %h2 Form is invalid
      %ul
        - for message in @product.errors.full_messages
          %li
            = message
  %p
    = f.label :name
    = f.text_field :name
  %p
    = fields_for :photos do |f_i|
      =f_i.file_field :image 

  %p.button
    = f.submit

产品型号

class Product < ActiveRecord::Base
  attr_accessible :description, :name, :price, :condition, :ship_method, :ship_price, :quantity, :photo
  has_many :photos, dependent: :destroy
  accepts_nested_attributes_for :photos
  belongs_to :user

照片模型

class Photo < ActiveRecord::Base
  attr_accessible :product_id

  belongs_to :product
  has_attached_file :image,
    :styles => {
      :thumb=> "100x100#",
      :small  => "300x300>",
      :large => "600x600>"
        }
end

用户模型

class User < ActiveRecord::Base
  attr_accessible :email, :password, :password_confirmation, :name

  attr_accessor :password
  has_many :products, dependent: :destroy
  has_many :photos,:through=>:products

显示产品页面

  %b seller
  = @product.user.name
  %br 
  - @product.photos.each do |photo|
    = image_tag photo.image.url

Answer 1

您是否用于后台作业，如果是，那么您需要使用.in RailsResque启动它，通常用于处理涉及邮件程序和图片上传的后台作业。或者下面的 Product.html.erb 示例，其中包含部分照片上传带回形针的产品配置了 Amazon S3。rake resque:work QUEUE='*'Resque

产品.html.erb

<%= render :partial => 'photos' %>

_photos.html.erb 至少需要一张图片

       <% if @product.photos[0].nil? %>
                <a href="javascript:void(0);" class="add-photos" >
                <img src="/assets/default/product-add-photos.png" alt="Add product photos"/>              
                 </a>   
        <% end %>
 <img src="<%= (@product.product_photos[0].nil? ? "" : @product.photos[0].image.url(:small)) %>" id="photos_1" class="product-photos-src <%=@product.photos[0].nil? ? 'dontdisplay' : ''%> "/>