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@@ -205,12 +205,10 @@
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       def create_or_update_thumbnail(temp_file, file_name_suffix, *size)
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         thumbnailable? || raise(ThumbnailError.new("Can't create a thumbnail if the content type is not an image or there is no parent_id column"))
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         returning find_or_initialize_thumbnail(file_name_suffix) do |thumb|
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-          thumb.attributes = {
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-            :content_type             => content_type, 
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-            :filename                 => thumbnail_name_for(file_name_suffix), 
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-            :temp_path                => temp_file,
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-            :thumbnail_resize_options => size
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-          }
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+          thumb.content_type = content_type
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+          thumb.filename = thumbnail_name_for(file_name_suffix)
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+          thumb.temp_path = temp_file
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+          thumb.thumbnail_resize_options = size
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           callback_with_args :before_thumbnail_saved, thumb
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           thumb.save!
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         end