使用Paperclip和Amazon S3獲取包含照片的zip文件

Question

我目前有一個可以正常工作的照片上傳程序，可以使用回形針和aws-s3寶石創建照片圖像。 加載程序還可以動態添加照片上傳字段，以便在單個提交時一次上傳多個文件。 我想做的是可以選擇上傳一個zip文件，期望文件包含照片，並讓它通過我創建縮略圖，中等大小和單張照片文件上傳的原始圖像的相同過程運行。 我的模型和控制器非常直接，如果在開發時在本地存儲照片，或者在生產時在s3上存儲照片，只需稍微看一下視圖模板：

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

視圖的有趣部分在這里：

* _form.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

歡迎所有想法或貢獻！ 謝謝！

Answer 1

我會使用回調來提取存檔文件（zip，tar等）並讓圖像文件繼續處理/保存。 上傳后使用delayed_job處理存檔，以增加用戶體驗並減輕服務器負載。

我不確定ruby中的任何歸檔實用程序包裝器，但您可以使用系統調用使用tar或類似的東西解壓縮歸檔，然后循環解壓縮文件以處理和存儲圖像並丟棄非圖像文件。

您甚至可以使用rake任務和cron作業來定期解壓縮，循環並從untarred歸檔創建Photos。