How to specify a prefix when uploading to S3 using activestorage's direct upload?

Question

With a standard S3 configuration:

AWS_ACCESS_KEY_ID:        [AWS ID]
AWS_BUCKET:               [bucket name]
AWS_REGION:               [region]
AWS_SECRET_AC         


        

Answer 1

The above solution will still give IntegrityError, need to use File.open(file). Thank Though for idea.

class History < ApplicationRecord
  has_one_attached :gs_history_file

  def attach(file) # method for attaching in the model
    blob_key = destination_pathname(file)
    blob = ActiveStorage::Blob.find_by(key: blob_key.to_s)
    unless blob
      blob = ActiveStorage::Blob.new.tap do |blob|
        blob.filename = blob_key.to_s
        blob.key = blob_key
        #blob.byte_size = 123123
        #blob.checksum = Time.new.strftime("%Y%m%d-") + Faker::Alphanumeric.alpha(6)
        blob.upload File.open(file)
        blob.save!
      end
    end

    # Attach method from ActiveStorage
    self.gs_history_file.attach blob
  end

  def destination_pathname(file)
    "testing/filename-#{Time.now}.xlsx"
  end
end