Rails Paperclip S3重命名成千上万的文件?

时间:2011-07-19 04:04:35

标签: ruby-on-rails amazon-s3 paperclip rename

我正在尝试重命名s3中的大量文件 - 将当前回形针has_attached_file :pathstuff/:id_:updated_at_:style.:extension更改为stuff/:id_:counter_:style.:extension,其中:counter是与图像在同一模型中的字段。

我对如何重命名所有文件并不是最模糊的 - 最好是在rake任务中。

顺便说一下,每次将新文件保存到记录中时,我都会递增:counter

这是Rails 3和截至本帖的最新Paperclip。

有什么想法吗?

谢谢!

2 个答案:

答案 0 :(得分:5)

这是我的解决方案:

# This task changes all of the keys from the current format,
# :id_:image_updated_at_:style, to :id_:image_counter_:style.
# :image_counter is set arbitrarily at 1, since all records have
# a default of 1 in that field (until they're updated).
desc "One-time renaming of all the amazon s3 content for User.image"

task :rename_s3_files, [:bucket] => :environment do |t, args|
  require 'aws/s3'

  cred = YAML.load(File.open("#{Rails.root}/config/s3.yml")).symbolize_keys!
  AWS::S3::Base.establish_connection! cred

  bucket = AWS::S3::Bucket.find(args[:bucket])

  # Rename everything in the bucket, taking out the timestamp and replacing it with "1"
  bucket.each do |obj|
    arr = obj.key.split('_')
    obj.rename(arr[0] + '_1_' + arr[2])
  end

end

它只是遍历存储桶中的所有文件,并根据此新架构重命名它们。我将Paperclip路径中的:counter字段设置为默认值为1,因此新文件名中为_1_

像魅力一样!

答案 1 :(得分:1)

试一下paperclip的刷新rake任务。我用它来生成新的样式,我猜它会改变你的路径变化吗?

https://github.com/thoughtbot/paperclip/wiki/Thumbnail-Generation

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