Attachments associate records with blobs. Usually that's a one
record-many blobs relationship, but it is possible to associate many
different records with the same blob. If you're doing that, you'll
want to declare with
has_one/many_attached :thingy, dependent:
false, so that destroying any one record won't destroy the blob
as well. (Then you'll need to do your own garbage collecting, though).
Synchronously deletes the attachment and purges the blob.
# File activestorage/app/models/active_storage/attachment.rb, line 21 def purge delete blob&.purge end