The process of directly uploading an attachment means that you are attaching a blob using the blob's `signed_id`. Read on to see how to access a blob's signed_id before the blob is attached to your ActiveRecord model instance in an RSpec suite.
Following `polymorphic_path` down the rabbit hole.
Level Up in Learning with Ariel Fogel (that's me!)
Wisdom from the distributed beyond
Are RESTful routes still a useful abstraction when we have other options?