I've started from Mike Clark's tutorial as well. The base image gets
saved fine, but the thumbnails don't get created and the resizing is
not working either.
But it seems like my problem is slightly different, because the size
attribute is NOT zero. At least not in the database. Maybe I'm
misunderstanding the problem, and the error is with a file size = 0
earlier in the process, even though it eventually gets saved with the
right value.
I'm using ImageScience as recommended. I noticed in the AFU Readme
that the :resize_to option specifically mentions RMagick. Does
resizing only work with RMagick?
Other threads talk about making sure your model has a parent_id
column. My model does have parent_id, but I found another thread on
this problem (which I've lost now) where they had to modify AFU to set
the thumbnail.parent_id because of a change in the arguments passed to
a certain method, like a post-save method, something like that.
I'm using InstantRails2 on WinXP. I'm pretty much a rails newb, so I
could be missing or screwing up very basic stuff
Follow this procedure to find the cause, then google for the correct solution:
• After uploading an image file, check the database and look if the content_type column is image/jpeg, image/png, …
=> Yes, check out option 2
=> No, it’s application/octet-stream: you are probably using SWFUpload or a Flash uploader, they don’t pass in the correct mime type. The easiest way is to patch attachment_fu’s uploaded_data= method to try and determine the content type if it’s application/octet-stream
• ImageScience or its dependencies aren’t installed properly, reinstall them.
Thanks for the reply. The content_type is 'image/pjpeg', not 'image/
jpeg'. Am I being nit-picky, or does that indicate a problem?
Also, down the road I'll probably end up using a host like DreamHost.
I think they use RMagick. In that case should I just get it working
with Rmagick instead of ImageScience?
