I think it might be handy to have a destroy action available on ActiveStorage::BlobsController, i.e:
rails_service_blob DELETE /rails/active_storage/blobs/:signed_id/*filename(.:format) active_storage/blobs#destroy
I will be adding this functionality to an application, and if there’s general support I’d be happy to submit it as a pull-request.
The use case is to allow unattached blobs to be destroyed. For example, say you have a form that allows a customer to upload an avatar (via direct uploads) and the customer:
- Uploads “handsome.jpg”, thereby creating a new Blob (blob-1)
- Then decides to upload “extra-handsome.jpg” instead, which creates another new Blob (blob-2)
- Submits the form, which attaches customer.avatar to blob-2
In this scenario blob-1 will forever be unattached.
I don’t believe there are any security concerns, because we’re using blob.signed_id.
Would the Rails team consider a patch that adds this functionality?