I am about to embark on reprocessing approx 100k user photos with new
dimensions that a site redesign has called for. We used AttachmentFu
and have stored the originals in case this ever came up. I don't see
anything built directly in AttachmenFu and was planning to write some
rake tasks to do this myself, but figured it was worth a shot to find
out if anybody else had to do this and wanted to share any
Your post at
saved my ass a few days ago, when I was setting up a new Macbook Pro.
So, now, I'm really happy to have the chance to pay you back
We faced the same situation as you (though with fewer than 100K images,
I must say), and I wrote code to rehash all the existing images to the
new thumbnail sizes. You'll find it at http://pastie.org/298645.
In our case, we were using S3 for image storage, and I had to insert the
sleep at line 12 to avoid freaking S3 out, but, if you're using local
file storage, it shouldn't be necessary.
Hope that helps-