Question

我在控制器上执行销毁操作后尝试删除Amazon S3目录。

控制器\ videos_controller.rb：

def destroy
  @video = Video.find(params[:id])
  @video.destroy
  redirect_to videos_path, notice:  "The video #{@video.name} has been deleted."
end

模型\ video.rb：

after_destroy :remove_S3_directory

def remove_S3_directory
  path_to_be_deleted = "https://s3.amazonaws.com/bucket/uploads/video/attachment/(ID of the video)"
  FileUtils.remove_dir(path_to_be_deleted, :force => true)
end

如何在不对路径进行硬编码的情况下指定path_to_be_deleted？

Answer 1

我最终安装了亚马逊的aws-sdk gem（carrierwave-sdk gem也将代替aws-sdk），并使用AWS delete_all方法根据前缀删除所有文件。使用此方法的格式如下：

s3.buckets[ENV['AWS_BUCKET']].objects.with_prefix('uploads/video/attachment/1/').delete_all

因此，我将以下代码放在我的控制器中：

def destroy
  @video = Video.find(params[:id])

  # Manipulating the string that points to the path under "bucket"
  directory_to_be_deleted = File.dirname(@video.attachment.url)
  bucket = ENV['AWS_BUCKET'] + '/'
  directory_to_be_deleted = directory_to_be_deleted.split(bucket)[1]
  directory_to_be_deleted = directory_to_be_deleted + '/'

  # Use Amazon APIs to remove directory
  s3 = AWS::S3.new(:access_key_id => ENV['AWS_KEY_ID'], :secret_access_key => ENV['AWS_KEY_VALUE'])
  s3.buckets[ENV['AWS_BUCKET']].objects.with_prefix(directory_to_be_deleted).delete_all

  @video.destroy
  redirect_to videos_path, notice:  "The video #{@video.name} has been deleted."
end

我想大多数代码都属于模型而不是控制器，但它现在可以正常工作，我会保持原样。

Answer 2

尝试这种方式： -

在controllers \ _ videos_controller.rb中：

def destroy
  @video = Video.find(params[:id])
  vid = @video
  @video.destroy
  path_to_be_deleted = vid.attachment
  FileUtils.remove_dir(path_to_be_deleted, :force => true)
  redirect_to videos_path, notice:  "The video #{vid.name} has been deleted."
end

删除Amazon S3目录

2 个答案: