Using an existing image on s3 with Carrierwave? - ruby

Question

I'm trying to use existing images on my s3 and relate them to a carrierwave object. These images are stored in a different location from the store_dir of my uploader.
I currently have my migration setup using remote_image_url but it is extremely slow and I don't think re-uploading them is necessary.
So, is it possible to point my uploader to an existing image that uses a folder structure different from my store_dir?
Here's an example of what I have now.
example block from migration:
ActiveRecord::Base.connection.execute(update_images)
Models::Product.where('image IS NOT NULL').select(:id, :image).find_in_batches(batch_size: 500).with_index do |group, batch|
puts "Processing group ##{batch}"
group.each do |prod|
next unless prod[:image].present?
image = Models::ProductImage.new(product_id: prod[:id])
image.remote_image_url = prod[:image]
image.save
end
sleep(7)
end
uploader:
class ImageUploader < CarrierWave::Uploader::Base
storage :fog
def filename
"#{secure_token}.#{file.extension}" if original_filename.present?
end
def store_dir
"#{ENV['RACK_ENV']}/#{sub_folder}"
end
def cache_dir
"#{ENV['RACK_ENV']}/#{sub_folder}"
end
def extension_allowlist
%w(jpg jpeg gif png)
end
def size_range
1.byte..10.megabytes
end
def sub_folder
case model
when Models::UserImage
'user_images'
when Models::ProductImage
'product_images'
else
'misplaced'
end
end
protected
def secure_token
var = :"##{mounted_as}_secure_token"
model.instance_variable_get(var) or model.instance_variable_set(var, SecureRandom.uuid)
end
end