class ActiveStorage::Attached::Many
Decorated proxy object representing of multiple attachments to a model.
Public Instance Methods
Attaches one or more attachables
to the record.
If the record is persisted and unchanged, the attachments are saved to the database immediately. Otherwise, they'll be saved to the DB when the record is next saved.
document.images.attach(params[:images]) # Array of ActionDispatch::Http::UploadedFile objects document.images.attach(params[:signed_blob_id]) # Signed reference to blob from direct upload document.images.attach(io: File.open("/path/to/racecar.jpg"), filename: "racecar.jpg", content_type: "image/jpg") document.images.attach([ first_blob, second_blob ])
# File lib/active_storage/attached/many.rb, line 30 def attach(*attachables) if record.persisted? && !record.changed? record.public_send("#{name}=", blobs + attachables.flatten) record.save else record.public_send("#{name}=", (change&.attachables || blobs) + attachables.flatten) end end
Returns true if any attachments have been made.
class Gallery < ApplicationRecord has_many_attached :photos end Gallery.new.photos.attached? # => false
# File lib/active_storage/attached/many.rb, line 46 def attached? attachments.any? end
Returns all the associated attachment records.
All methods called on this proxy object that aren't listed here will automatically be delegated to attachments
.
# File lib/active_storage/attached/many.rb, line 11 def attachments change.present? ? change.attachments : record.public_send("#{name}_attachments") end
Returns all attached blobs.
# File lib/active_storage/attached/many.rb, line 16 def blobs change.present? ? change.blobs : record.public_send("#{name}_blobs") end
Deletes associated attachments without purging them, leaving their respective blobs in place.
# File lib/active_storage/attached/many.rb, line 51 def detach attachments.delete_all if attached? end
Directly purges each associated attachment (i.e. destroys the blobs and attachments and deletes the files on the service).
# File lib/active_storage/attached/many.rb, line 56
Purges each associated attachment through the queuing system.
# File lib/active_storage/attached/many.rb, line 62