Delete objects from Amazon S3 via Rails Aws API 2 - ruby-on-rails

Question

I'm using the s3_direct_upload gem to store images and videos on Amazon s3. When the image or video is changed or deleted, I want to nuke the old image or video on s3 and save everyone money and space.
This solution uses the V1 Aws SDK and is no longer valid:
http://blog.littleblimp.com/post/53942611764/direct-uploads-to-s3-with-rails-paperclip-and
This solution deletes files that were initially uploaded in a batch, but does nothing for the final files post-processing:
github - waynehoover/s3_direct_upload
Here is the Aws v2 SDK doc, which seems clear enough:
http://docs.aws.amazon.com/sdkforruby/api/Aws/S3/Client.html#delete_object-instance_method
Yet this solution:
class Image < ActiveRecord::Base
validates :name, :s3_image_file_url, :s3_image_file_path, :s3_image_file_key, presence: true
before_destroy :delete_s3_files
private
def delete_s3_files
s3 = Aws::S3::Client.new()
response = s3.delete_object(
bucket: Rails.configuration.aws[:bucket],
key: self.s3_image_file_key
)
end
end
...returns only:
=> #<struct delete_marker=nil, version_id=nil>
(And the file is still available on s3 at the original url.)
Thoughts? Hasn't everyone had to do this?

Answer 1

I've written code using the v2 SDK to delete objects from S3. Here is a sample from my codebase:
def delete_avatar_from_s3
Aws::S3::Client.new.delete_object(
bucket: "user-avatars",
key: "#{#id}"
)
return true
rescue => e
Rails.logger.error "Error deleting avatar of user #{#id}. Failure with S3 call. Details: #{e}; #{e.backtrace}"
return false
end
It looks similar to yours, so I don't think that this code is the issue. Have you confirmed your bucket & key names and ensured that your method is actually being called?

Answer 2

AWS SDK for Ruby V2
delete one or more file, just pass objects array containing keys.
def delete_from_s3
S3_BUCKET.delete_objects({
delete: {
objects: [
{key: key}
]
}
})
end