module Shrine::Plugins::AtomicHelpers::AttacherClassMethods

# File lib/shrine/plugins/atomic_helpers.rb
17 def retrieve(model: nil, entity: nil, name:, file:, **)
18   fail ArgumentError, "either :model or :entity is required" unless model || entity
19 
20   record = model || entity
21 
22   attacher   = record.send(:"#{name}_attacher", **) if record.respond_to?(:"#{name}_attacher")
23   attacher ||= from_model(record, name, **) if model
24   attacher ||= from_entity(record, name, **) if entity
25 
26   if attacher.file != attacher.uploaded_file(file)
27     fail Shrine::AttachmentChanged, "attachment has changed"
28   end
29 
30   attacher
31 end