使用回形针和亚马逊S3的zip文件包含照片

Question

我目前有一个工作照片上传，使用回形针和aws-s3宝石创建照片图像。加载器还可以动态添加照片上传字段，以便一次提交多个文件即可立即上传。我想要做的是可以选择上传一个zip文件，期望该文件包含照片，并通过创建缩略图，中等大小以及单张照片文件上传所经过的原始图像的相同过程来运行该文件。我的模型和控制器是，如果在生产花式视图模板存储在本地，如果在开发或S3上的照片，只有一点点很直接：

photo.rb

class Photo < ActiveRecord::Base 
    belongs_to :album 
    if AppConfig['s3'] 
    has_attached_file :data, 
     :styles => { 
     :thumb => "100x100>", 
     :medium => "500x500>" 
     }, 
     :storage => :s3, 
     :default_style => :original, 
     :bucket => AppConfig['s3']['bucket_name'], 
     :s3_credentials => { :access_key_id => AppConfig['s3']['access_id'], :secret_access_key => AppConfig['s3']['secret_key'] }, 
     :s3_headers => { 'Cache-Control' => 'max-age=315576000', 'Expires' => 10.years.from_now.httpdate }, 
     :path => "/:class/:id/:style/:filename" 
    else 
    has_attached_file :data, 
     :styles => { 
     :thumb => "100x100>", 
     :medium => "500x500>" 
     }, 
     :storage => :filesystem, 
     :default_style => :original 
    end 
end 

* photos_controller.rb *

class Admin::PhotosController < Admin::AdminController 
    def index 
    @photos = Photo.all 
    end 

    def show 
    @photo = Photo.find(params[:id]) 
    end 

    def new 
    @photo = Photo.new 
    end 

    def create 
    @photo = Photo.new(params[:photo]) 
    if @photo.save 
     flash[:notice] = "Successfully created photo." 
     redirect_to [:admin, @photo] 
    else 
     render :action => 'new' 
    end 
    end 

    def edit 
    @photo = Photo.find(params[:id]) 
    end 

    def update 
    @photo = Photo.find(params[:id]) 
    album = @photo.album 
    if @photo.update_attributes(params[:photo]) 
     flash[:notice] = "Successfully updated photo." 
     redirect_to [:admin, @photo] 
    else 
     redirect_to edit_admin_album_url(album) 
    end 
    end 

    def destroy 
    @photo = Photo.find(params[:id]) 
    album = @photo.album 
    @photo.destroy 
    flash[:notice] = "Successfully destroyed photo." 
    redirect_to edit_admin_album_url(album) 
    end 

end 

视图的有趣的部分是在这里：

* _fo rm.html.haml *

#photos 
    - if @album.new_record? 
     = render :partial => 'photo', :locals => { :form => f, :photo => @album.photos.build } 
    - else 
     - for photo in @album.photos 
     .photo 
      = link_to(image_tag(photo.data(:thumb)), photo.data(:medium), :class => 'photo_link') 
      - f.fields_for @album.photos do |photo_field| 
      /Viewable? 
      /= photo_field.check_box :viewable 
      %br 
      = link_to "Delete", [:admin, photo], :confirm => 'Are you sure?', :method => :delete 
     .float_clear 
    = add_object_link("New Photo", f, @album.photos.build, "photo", "#photos") 
    .row 
    = submit_tag "Save", :disable_with => "Uploading please wait..." 
    .float_clear 

* _photo.html.haml *

.photo_form 
    %p 
    - form.fields_for :photos, photo, :child_index => (photo.new_record? ? "index_to_replace_with_js" : nil) do |photo_form| 
    = photo_form.file_field :data 
    = link_to_function "delete", "remove_field($(this), ('.photo_form'))" 
    %br 

欢迎所有的想法和贡献！谢谢！

Answer 1

我会使用回调来提取存档文件（zip，tar等），并让图像文件继续处理/保存。使用delayed_job在上传后处理归档，以增加用户体验并减轻服务器的负载。

我不确定在ruby中有任何存档实用程序包装，但可以使用系统调用来使用tar或类似的东西解压缩存档，然后循环解压缩文件来处理和存储图像并丢弃非图像文件。

您甚至可以使用rake任务和cron作业定期解压，循环并从解压缩的存档创建照片。