Due to how ImageMagick handles its image format conversion and how Tempfile handles its naming scheme, it is necessary to override how Tempfile makes its names so as to allow for file extensions. Idea taken from the comments on this blog post: marsorange.com/archives/of-mogrify-ruby-tempfile-dynamic-class-definitions
# File lib/dm-paperclip/processor.rb, line 45 def make_tmpname(basename, n) case basename when Array prefix, suffix = *basename else prefix, suffix = basename, '' end t = Time.now.strftime("%y%m%d") path = "#{prefix}#{t}-#{$$}-#{rand(0x100000000).to_s(36)}-#{n}#{suffix}" end
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