1
0
Fork 0
mirror of https://github.com/rails/rails.git synced 2022-11-09 12:12:34 -05:00
rails--rails/activestorage/app/models/active_storage/attachment.rb
Rafael Mendonça França f601a01b2c Do not eager load ActiveRecord::Base
Everything inside the app directory of a engine is autoload/eager loaded automatically so we don't need to require them.
2017-08-03 16:57:48 -04:00

28 lines
1.2 KiB
Ruby

require "active_support/core_ext/module/delegation"
# 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).
class ActiveStorage::Attachment < ActiveRecord::Base
self.table_name = "active_storage_attachments"
belongs_to :record, polymorphic: true
belongs_to :blob, class_name: "ActiveStorage::Blob"
delegate_missing_to :blob
# Purging an attachment will purge the blob (delete the file on the service, then destroy the record)
# and then destroy the attachment itself.
def purge
blob.purge
destroy
end
# Purging an attachment means purging the blob, which means talking to the service, which means
# talking over the internet. Whenever you're doing that, it's a good idea to put that work in a job,
# so it doesn't hold up other operations. That's what #purge_later provides.
def purge_later
ActiveStorage::PurgeJob.perform_later(self)
end
end