lib/attached/attachment.rb in attached-0.4.2 vs lib/attached/attachment.rb in attached-0.4.3

@@ -155,9 +155,10 @@
     
     def assign(file, identifier = Identifier.generate)
       self.file = file
       
       if file
+        extension ||= file.extension if file.respond_to?(:extension)
         extension ||= File.extname(file.original_filename) if file.respond_to?(:original_filename)
         extension ||= File.extname(file.path) if file.respond_to?(:path)
       end
       
       @purge = [self.path, *self.styles.map { |style, options| self.path(style) }] if attached?
\ No newline at end of file