Rails的回形针S3重命名数以千计的文件？ [英] Rails Paperclip S3 rename thousands of files?

问题描述

我想重新命名了很多文件在S3 - 改变当前回形针 has_​​attached_file ：路径从的东西/：ID_：updated_at_：风格：扩展到的东西/：ID_：counter_：风格：扩展 ，其中：计数是在同一个模型作为图像领域

I'm trying to rename a lot of files in s3--changing the current paperclip has_attached_file :path from stuff/:id_:updated_at_:style.:extension to stuff/:id_:counter_:style.:extension, where :counter is a field in the same model as the image.

我还没有就如何重命名的所有文件的foggiest - pferably在rake任务$ P $

I haven't the foggiest on how to rename all the files--preferably in a rake task.

顺便说一句，我会递增：计数一个新的文件保存到记录每次

Incidentally, I'll be incrementing :counter each time a new file is saved to the record.

这是Rails 3的和最新的回形针作为此张贴。

This is Rails 3 and the latest Paperclip as of this posting.

任何想法？

谢谢！

推荐答案

下面是我的解决办法：

# 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

它只是通过在桶中的所有文件，并根据这一新的模式重新命名它们。我设置：在回形针路径计数器字段默认为1，因此 _1 _ 在新的文件名

工程就像一个魅力！

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