proxy.rb in carrierwave-3.0.0.rc

- old
+ new

@@ -28,21 +28,34 @@
       # === Returns
       #
       # [String] uniquely identifies a file
       #
       def identifier
-        @identifier || storage.try(:identifier)
+        @identifier || (file && storage.try(:identifier))
       end
 
       ##
+      # Returns a String which is to be used as a temporary value which gets assigned to the column.
+      # The purpose is to mark the column that it will be updated. Finally before the save it will be
+      # overwritten by the #identifier value, which is usually #filename.
+      #
+      # === Returns
+      #
+      # [String] a temporary_identifier, by default @original_filename is used
+      #
+      def temporary_identifier
+        @original_filename || @identifier
+      end
+
+      ##
       # Read the contents of the file
       #
       # === Returns
       #
       # [String] contents of the file
       #
-      def read
-        file.try(:read)
+      def read(*args)
+        file.try(:read, *args)
       end
 
       ##
       # Fetches the size of the currently stored/cached file
       #