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Description: Treat an ActiveRecord model as a file attachment, storing its patch, size, content type, etc.
Homepage: http://weblog.techno-weenie.net
Clone URL: git://github.com/technoweenie/attachment_fu.git
Click here to lend your support to: attachment_fu and make a donation at www.pledgie.com ! 
Applied patch from Christoph Lupprich to correct file handling in core image 
processor for attachment fu: 
http://ar-code.lighthouseapp.com/projects/35/tickets/24-patch-coreimage-resizes-
main-attachment-as-well-as-thumbnails
crafterm (author)
Wed May 21 20:47:59 -0700 2008
commit  834553ad3d876541b986ed6de115ea0023070bb5
tree    4a175a97a65b7c694f5cc496d4d4fc8880153e22
parent  61ad36fb73de927ace41689999187076496934df
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lib/technoweenie/attachment_fu/processors/core_image_processor.rb 
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@@ -44,6 +44,9 @@ module Technoweenie # :nodoc:
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             processor.render do |result|
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               self.width  = result.extent.size.width  if respond_to?(:width)
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               self.height = result.extent.size.height if respond_to?(:height)
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+              
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+              # Get a new temp_path for the image before saving
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+              self.temp_path = Tempfile.new(random_tempfile_filename, Technoweenie::AttachmentFu.tempfile_path).path
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               result.save self.temp_path, OSX::NSJPEGFileType
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               self.size = File.size(self.temp_path)
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             end
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test/processors/core_image_test.rb 
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@@ -22,6 +22,12 @@ class CoreImageTest < Test::Unit::TestCase
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       # test geometry string
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       assert_equal 31, geo.width
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       assert_equal 41, geo.height
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+      
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+      # This makes sure that we didn't overwrite the original file
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+      # and will end up with a thumbnail instead of the original
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+      assert_equal 42, attachment.width
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+      assert_equal 55, attachment.height
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+      
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     end
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   else
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     def test_flunk

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