blob: d25541284290abfebeec97bc3244949d54f46140 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
# Representation of a single attachment to a model.
class ActiveStorage::Attached::One < ActiveStorage::Attached
delegate_missing_to :attachment
# Returns the associated attachment record.
#
# You don't have to call this method to access the attachment's methods as
# they are all available at the model level.
def attachment
record.public_send("#{name}_attachment")
end
# Associates a given attachment with the current record, saving it to the
# database.
def attach(attachable)
write_attachment \
ActiveStorage::Attachment.create!(record: record, name: name, blob: create_blob_from(attachable))
end
# Checks the presence of the attachment.
#
# class User < ActiveRecord::Base
# has_one_attached :avatar
# end
#
# User.new.avatar.attached? # => false
def attached?
attachment.present?
end
# Directly purges the attachment (i.e. destroys the blob and
# attachment and deletes the file on the service).
def purge
if attached?
attachment.purge
write_attachment nil
end
end
# Purges the attachment through the queuing system.
def purge_later
if attached?
attachment.purge_later
end
end
private
def write_attachment(attachment)
record.public_send("#{name}_attachment=", attachment)
end
end
|
