Paperclip error in rails3 on passenger

Question

Rails3 on passenger. I have imagemagick installed and working correctly however I receive the following error when trying to add an image via paperclip. This works fine on in development, but not in production on passenger.

[paperclip] An error was received while processing: #<Paperclip::PaperclipError: There was an error processing the thumbnail for stream,11629,0>
    [paperclip] /usr/bin/identify '-format' '%wx%h' '/tmp/stream,11629,0.jpg[0]'
    [paperclip] /usr/bin/convert '/tmp/stream,11629,0.jpg[0]' '-resize' '100x100>' '/tmp/stream,11629,0,11629,1'

I created a paperclip.rb file in config/initializers and added

Paperclip.options[:swallow_stderr] = false
Paperclip.options[:command_path] = "/usr/bin/"

but it hasn't fixed it for me. Any ideas?

Are you using Nginx or Apache? What is the size of your uploads? — myabc, Oct 12 '10 at 13:36
apache, small files under 0.5mb, I tried different types, jpeg and png. — raphael_turtle, Oct 12 '10 at 13:38
Have you tried to copy that `convert` command from the log and execute it manually to check if it works? — Matt, Oct 12 '10 at 16:30
convert and identify both work when manually called on the server — raphael_turtle, Oct 12 '10 at 16:48
And what's the result with large files? I ask, because larger files are sometimes handled differently - with a TempFile being created, whereas smaller files are passed as an IOStream for processing. — myabc, Oct 13 '10 at 10:07

score 0 · Answer 1 · answered Oct 12 '10 at 13:29

0

Check to see if rmagick is installed...

Run these commands

irb -rubygems -r RMagick

And then once inside of irb:

puts Magick::Long_version

You should get output like:

This is RMagick 2.13.1 ($Date: 2009/12/20 02:33:33 $) Copyright (C) 2009 by Timothy P. Hunter Built with ImageMagick 6.5.9-3 2010-02-19 Q16 http://www.imagemagick.org Built for ruby 1.8.7 Web page: http://rmagick.rubyforge.org Email: rmagick@rubyforge.org => nil

If you don't, then I think rmagick is not installed

answered Oct 12 '10 at 13:29

Jesse Wolgamott

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Unfortunately, this won't solve the issue. Paperclip doesn't actually use RMagick. Paperclip shells out to ImageMagick. To check ImageMagick is correctly installed: `identify -version` or `convert -version`. – myabc Oct 12 '10 at 13:35
RMagick is installed.This is RMagick 2.13.1 ($Date: 2009/12/20 02:33:33 $) Copyright (C) 2009 by Timothy P. Hunter Built with ImageMagick 6.5.7-8 2009-11-26 Q16 http://www.imagemagick.org Built for ruby 1.8.7 Web page: http://rmagick.rubyforge.org Email: rmagick@rubyforge.org => nil – raphael_turtle Oct 12 '10 at 13:35
convert -version Version: ImageMagick 6.5.7-8 2009-11-26 Q16 http://www.imagemagick.org Copyright: Copyright (C) 1999-2009 ImageMagick Studio LLC Features: OpenMP – raphael_turtle Oct 12 '10 at 13:37
@myabc - "RMagick is an interface between the Ruby programming language and ImageMagick/ GraphicsMagick." – Jesse Wolgamott Oct 12 '10 at 21:44
It is indeed. RMagick is used by many other libraries, but not by Paperclip. Paperclip prefers instead to shell out to ImageMagick CLI tools. – myabc Oct 13 '10 at 10:05

0x4a6f4672 · Answer 2 · 2012-01-09T14:42:18.633

I have got a similar error ("processing the thumbnail for stream") if I try to create rounded corners with Paper clip ..

Command :: convert '/tmp/stream20120109-15817-1lju7p6-0.jpg[0]' -resize "918x" 
    [.. complicated options here..] 
    '/tmp/stream20120109-15817-1lju7p6-020120109-15817-17dl83e-0.png'
[paperclip] An error was received while processing: #<Paperclip::PaperclipError: 
There was an error processing the thumbnail for stream20120109-15817-1lju7p6-0>

How does your options for has_attached_file look like? Maybe a problem with ImageMagick parameters. In my case I wrote a plus sign instead of a minus - you had to use -alpha off instead of +alpha off - then error vanishes. Sometimes a single sign (- instead of + or vice versa) makes the difference.

Paperclip error in rails3 on passenger

2 Answers2