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我如何重复铁路运输中储存的档案。
原标题:How do I duplicate a file stored in ActiveStorage in Rails 5.2

我有一个利用主动辅导的模式:

class Package < ApplicationRecord
  has_one_attached :poster_image
end

我如何制作包裹物体的复印件,其中含有初始海报——image文档的重复。 大致如下:

original = Package.first
copy = original.dup
copy.poster_image.attach = original.poster_image.copy_of_file
最佳回答

1. 更新你的模型:

class Package < ApplicationRecord
  has_one_attached :poster_image
end

附上该资料袋的海报图像布,以列入目的地一揽子计划:

source_package.dup.tap do |destination_package|
  destination_package.poster_image.attach(source_package.poster_image.blob)
end
问题回答

如果您希望填满copy,以便原始记录。 彩色记录本身有所附档案副本:

Inrails 5.2, grab ,该代码,并将其载于config/ initializers/active_storage.rb ,然后使用该代码复制件:

ActiveStorage::Downloader.new(original.poster_image).download_blob_to_tempfile do |tempfile|
  copy.poster_image.attach({
    io: tempfile, 
    filename: original.poster_image.blob.filename, 
    content_type: original.poster_image.blob.content_type 
  })
end

在铁路站5.2号(每次放电时包括)。

original.poster_image.blob.open do |tempfile|
  copy.poster_image.attach({
    io: tempfile, 
    filename: original.poster_image.blob.filename, 
    content_type: original.poster_image.blob.content_type 
  })
end

Thanks, George, for your original answer and for your Rails contributions. :)

为我工作:

copy.poster_image.attach(original.poster_image.blob)

本杰明的答复略有改动,对我来说的确是有用的。

copy.poster_image.attach({
    io: StringIO.new(original.poster_image.blob.download), 
    filename: original.poster_image.blob.filename, 
    content_type: original.poster_image.blob.content_type 
  })





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