loading images from tempfile
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malikb
Jun 30, 2009, 2:37:43 PM6/30/09
to Paperclip Plugin
I have a collision of image versions when I try to imitate "virtual"
uploading from a temporary file;
http://pastie.org/529718
It downloads image from the web using open-uri; and downloaded picture
is stored in a tempfile.
When two or more people (or OS processes) start downloading at the
same time, image has a collisions of styles
(e.g. :original, :thumbnail)... I got a thumbnail of previos
downloaded image, or next image will have a thumbnail which is
generated from the current downloaded image.
uploading from a temporary file;
http://pastie.org/529718
It downloads image from the web using open-uri; and downloaded picture
is stored in a tempfile.
When two or more people (or OS processes) start downloading at the
same time, image has a collisions of styles
(e.g. :original, :thumbnail)... I got a thumbnail of previos
downloaded image, or next image will have a thumbnail which is
generated from the current downloaded image.
Lee Hambley
Jun 30, 2009, 3:21:04 PM6/30/09
to papercli...@googlegroups.com
You need to research making your instance variables thread safe, this problem is upstream of Paperclip in your app that is threading/forking I suspect.
This should get you started... http://thebogles.com/blog/2006/11/ruby-threading/
If you're already just running multiple copies of your script, and not threading/forking - we may have a more serious problem to address.
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