1 files changed, 7 insertions, 22 deletions
diff --git a/activestorage/lib/active_storage/attached.rb b/activestorage/lib/active_storage/attached.rb
index c08fd56652..b540f85fbe 100644
--- a/activestorage/lib/active_storage/attached.rb
+++ b/activestorage/lib/active_storage/attached.rb
@@ -1,40 +1,25 @@
 # frozen_string_literal: true
 
-require "action_dispatch"
-require "action_dispatch/http/upload"
 require "active_support/core_ext/module/delegation"
 
 module ActiveStorage
   # Abstract base class for the concrete ActiveStorage::Attached::One and ActiveStorage::Attached::Many
   # classes that both provide proxy access to the blob association for a record.
   class Attached
-    attr_reader :name, :record, :dependent
+    attr_reader :name, :record
 
-    def initialize(name, record, dependent:)
-      @name, @record, @dependent = name, record, dependent
+    def initialize(name, record)
+      @name, @record = name, record
     end
 
     private
-      def create_blob_from(attachable)
-        case attachable
-        when ActiveStorage::Blob
-          attachable
-        when ActionDispatch::Http::UploadedFile, Rack::Test::UploadedFile
-          ActiveStorage::Blob.create_after_upload! \
-            io: attachable.open,
-            filename: attachable.original_filename,
-            content_type: attachable.content_type
-        when Hash
-          ActiveStorage::Blob.create_after_upload!(attachable)
-        when String
-          ActiveStorage::Blob.find_signed(attachable)
-        else
-          nil
-        end
+      def change
+        record.attachment_changes[name]
       end
   end
 end
 
+require "active_storage/attached/model"
 require "active_storage/attached/one"
 require "active_storage/attached/many"
-require "active_storage/attached/macros"
+require "active_storage/attached/changes"