Задняя панель Carrierwave и Heroku - tmp issue

Question

Я загружаю изображения в мою модель. Я использую Carrierwave, Carrierwave-Backgrounder, Carrierwave-FTP для SFTP и DelayedJob.

Цель состоит в том, чтобы изображения обрабатывались и сохранялись через SFTP в фоновом режиме. Мой подход отлично работает в моей среде разработки, но не работает на Heroku.

Я понимаю, это потому, что каталог tmp Heroku стирается после действия create, но я ищу способ обойти это.

Возможно ли использовать S3/Fog для хранения файлов tmp? Затем откройте их с помощью Carrierwavebackgrounder. Или есть лучший подход?

Добавил:

# encoding: utf-8 

class ImageUploader < CarrierWave::Uploader::Base 

    def cache_dir 
    "#{Rails.root}/tmp/uploads" 
    end 

    include ::CarrierWave::Backgrounder::Delay 
    include CarrierWave::MiniMagick 

    storage :sftp 

    # Override the directory where uploaded files will be stored. 
    # This is a sensible default for uploaders that are meant to be mounted: 
    def store_dir 
    # "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}" 
    "/" 
    end 

    def rotate(degree) 
    manipulate! do |img| 
     img.rotate(degree) 
     img 
    end 
    end 

    version :tiny, :if => :initial? do 
    process :resize_to_fit => [75, 75] 
    def full_filename(for_file = model.image.file) 
     model.product_code.to_s + "-0.jpg" 
    end 
    end 

    version :small, :if => :initial? do 
    process :resize_to_fit => [200, 200] 
    def full_filename(for_file = model.image.file) 
     model.product_code.to_s + "-1.jpg" 
    end 
    end 

    version :medium, :if => :initial? do 
    process :resize_to_fit => [500, 500] 
    def full_filename(for_file = model.image.file) 
     model.product_code.to_s + "-2T.jpg" 
    end 
    end 

    version :large, :if => :initial? do 
    process :resize_to_fit => [1000, 1000] 
    def full_filename(for_file = model.image.file) 
     model.product_code.to_s + "-2.jpg" 
    end 
    end 

    version :medium_alt, :if => :initial? do 
    process :resize_to_fit => [100, 50] 
    def full_filename(for_file = model.image.file) 
     model.product_code.to_s + "-2S.jpg" 
    end 
    end 

    version :medium_additional, :if => :additional? do 
    process :resize_to_fit => [500, 500] 
    def full_filename(for_file = model.image.file) 
     model.product_code.to_s + "-#{model.version_number}" + "T.jpg" 
    end 
    end 

    version :large_additional, :if => :additional? do 
    process :resize_to_fit => [1000, 1000] 
    def full_filename(for_file = model.image.file) 
     model.product_code.to_s + "-#{model.version_number}" + ".jpg" 
    end 
    end 

    version :medium_alt_additional, :if => :additional? do 
    process :resize_to_fit => [100, 50] 
    def full_filename(for_file = model.image.file) 
     model.product_code.to_s + "-#{model.version_number}" + "S.jpg" 
    end 
    end 

    version :ebay_initial, :if => :initial? do 
    process :resize_to_fit => [1600, 1600] 
    def full_filename(for_file = model.image.file) 
     model.product_code.to_s + "-ebay.jpg" 
    end 
    end 

    version :ebay_additional, :if => :additional? do 
    process :resize_to_fit => [1600, 1600] 
    def full_filename(for_file = model.image.file) 
     model.product_code.to_s + "-#{model.version_number}" + "-ebay.jpg" 
    end 
    end 

    version :display_initial, :if => :initial? do 
    process :resize_to_fit => [200, 1000] 
    def full_filename(for_file = model.image.file) 
     model.product_code.to_s + "-display.jpg" 
    end 
    end 

    version :display_additional, :if => :additional? do 
    process :resize_to_fit => [200, 1000] 
    def full_filename(for_file = model.image.file) 
     model.product_code.to_s + "-#{model.version_number}" + "-display.jpg" 
    end 
    end 

    protected 

    def initial?(new_file) 
    original_filename.to_i == 0 
    end 

    def additional?(new_file) 
    original_filename.to_i > 0 
    end 

    # Add a white list of extensions which are allowed to be uploaded. 
    # For images you might use something like this: 
    # Currently inactive. 
    # def extension_white_list 
    # %w(jpg jpeg) 
    # end 

end 

Picture.rb:

class Picture < ActiveRecord::Base 

    mount_uploader :image, ImageUploader 

    store_in_background :image 

    belongs_to :item 
end 

Контроллер загрузки:

def import_pictures(pictures, item) 
    pictures['image'].each do |a| 
     if a.original_filename.downcase.include?('.jpg') || a.original_filename.downcase.include?('.jpeg') 
     count = @item.pictures.count 
     photo_number = count + 2 
     a.original_filename = count.to_s 
     @picture = @item.pictures.create(:image => a, :item_id => item.id, :product_code => item.product_code, :version_number => photo_number) 
     else 
     flash[:error] = "Only .jpg and .jpeg files are allowed. Try again." 
     redirect_to edit_item_path(@item) 
     end 
    end 
    end 

Изображение Схема:

create_table "pictures", force: true do |t| 
    t.integer "item_id" 
    t.string "image" 
    t.datetime "created_at" 
    t.datetime "updated_at" 
    t.integer "product_code" 
    t.integer "version_number" 
    t.string "image_tmp" 
    end 

Heroku Журналы:

2015-03-19T20:27:56.804863+00:00 app[worker.1]: 2015-03-19T20:27:56+0000: [Worker(host:f84dfd71-bd05-4a44-ac83-1d1818d0bfe3 pid:3)] Job CarrierWave::Workers::StoreAsset (id=36) FAILED (5 prior attempts) with Errno::ENOENT: No such file or directory - /app/tmp/uploads/1426795849-9-9664/3 

Answer 1

На данный момент вы не можете использовать store_in_background на Heroku. Из README:

# Heroku may deploy workers on separate servers from where your dyno cached the files. 
# 
# IMPORTANT: Only use this method if you have full control over your tmp storage directory. 

Таким образом, вы должны магазин непосредственно (без Backgrounder) и может process_in_background задерживается.