回形针 + S3:将现有文件从一种 :path 格式迁移到另一种 [英] Paperclip + S3: Migrating existing files from one :path format to another

问题描述

我有一个带有 avatar 回形针附件的模型.它现在有一个简单的标准路径

I have a model with a avatar paperclip attach. It has now a plain standard path

has_attached_file :avatar,
  :path => "/:id-:style-:filename"

我需要进入一个混淆的地方

Which I need to move into an obfuscated one

has_attached_file :avatar,
  :path => "/:id-:hash.:extension"
  :hash_secret => 'asecuresecret'

新图像一切正常，但是如何将存储在 S3 中的现有文件迁移到新的路径格式，即重命名它们?

Everything's working fine with new images, but how do I migrate the existing files stored in S3 to the new path format, ie rename them?

我使用的是回形针 2.7 和 Rails 3.2

I'm using paperclip 2.7 and Rails 3.2

谢谢！！！

推荐答案

这个 rake 任务应该可以解决问题.我用 aws-sdk 1.5.2 和 ruby​​ 1.9.3p194 尝试过.

This rake task should do the trick. I tried it with aws-sdk 1.5.2 and ruby 1.9.3p194.

new_key 应该映射到您的新回形针路径.不要忘记根据需要设置:acl.

The new_key should map to your new paperclip path. Don't forget to set :acl according to your needs.

namespace :data do
  desc 'aws images migration'
  task :migrate_images do |t, args|
    s3 = AWS::S3.new(:access_key_id => 'XXX', :secret_access_key => 'XXX')
    bucket = s3.buckets['your-bucket-name']
    bucket.objects.each do |object|
      new_key = object.key.gsub(........)
      new_object = bucket.objects[new_key]
      object.copy_to new_object, {:acl => :public_read}
    end
  end
end

一旦您确定新文件是正确的，就应该手动删除原始文件或使用类似的任务.

The original file should be deleted manually or using a similar task, once you are sure the new file is correct.

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