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module RecordsUploads
module Concern
extend ActiveSupport::Concern
attr_accessor :upload
included do
after :store, :record_upload
before :remove, :destroy_upload
end
# After storing an attachment, create a corresponding Upload record
#
# NOTE: We're ignoring the argument passed to this callback because we want
# the `SanitizedFile` object from `CarrierWave::Uploader::Base#file`, not the
# `Tempfile` object the callback gets.
#
# Called `after :store`
def record_upload(_tempfile = nil)
return unless model
return unless file && file.exists?
Upload.transaction do
uploads.where(path: upload_path).delete_all
upload.destroy! if upload
self.upload = build_upload_from_uploader(self)
upload.save!
end
end
def upload_path
File.join(store_dir, filename.to_s)
end
private
def uploads
Upload.order(id: :desc).where(uploader: self.class.to_s)
end
def build_upload_from_uploader(uploader)
Upload.new(
size: uploader.file.size,
path: uploader.upload_path,
model: uploader.model,
uploader: uploader.class.to_s
)
end
# Before removing an attachment, destroy any Upload records at the same path
#
# Called `before :remove`
def destroy_upload(*args)
return unless file && file.exists?
self.upload = nil
uploads.where(path: upload_path).delete_all
end
end
end
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