url_for_direct_upload

# File activestorage/lib/active_storage/service/s3_service.rb, line 79
    def url_for_direct_upload(key, expires_in,, content_type,, content_length,, checksum))
      instrument :url, key: key do |payload|
        generated_url = object_for(key).presigned_url :put, expires_in: expires_in.to_i,
          content_type: content_type, content_length: content_length, content_md5: checksum

        payload[:url] = generated_url

        generated_url
      end
    end