How to update/rename a carrierwave uploaded file?

Question

I cant figure out how to update/rename a file uploaded/managed with Carrierwave-mongoid in rails 3.2.6. I want to rename the file in the db as well as on the filesystem.

<

Answer 1

The most efficient way to do this is to just move the existing S3 object (assuming your storage layer is S3):

def rename(new_name)
  bucket_name = "yourapp-#{Rails.env}"
  resource = Aws::S3::Resource.new
  bucket = resource.bucket(bucket_name)
  object = bucket.object(path)
  new_filename = "#{new_name}#{File.extname(path)}"
  new_path = File.join(File.dirname(path), new_filename)
  object.move_to(bucket: bucket_name, key: new_path)

  model.update_column(mounted_as, new_filename)
  model.reload

  # Now call `recreate_versions!(*versions.keys)`
  # if you want versions updated. Explicitly passing
  # versions will prevent the base version getting
  # reuploaded.

  model
end

This is using the aws-sdk-s3 gem.