问题
I'm using:
- carrierwave 0.6.0
- rails 3.2.1
- mini_magick 3.4
- ruby 1.9.2p290
And during image uploading I want to resize uploading pic:
(image_uploader.rb)
process :resize_to_fit => [200, 200]
But after image uploading I've got an error:
1 error prohibited this organization from being saved:
Image image Failed to manipulate with MiniMagick, maybe it is not an image? Original Error: MiniMagick::Invalid
PS. If I'm not resizing, image upload works fine.
PS2. I tried to add in config/environment.rb:
require 'rubygems'
require "mini_magick"
but without success (still not working - btw. is it required when using mini_magick as a gem?)
回答1:
I'm sure that you've solved this by now (at least hopefully! It's almost two months later!), but here's a solution that worked for me just now:
Uninstall imagemagick through homebrew:
brew uninstall imagemagick
Clean your homebrew directory:
brew cleanup --force -s- --force removes all out of date keg-only brews, -s removes all cached downloads
Reinstall imagemagick:
brew install imagemagick
After all of that, you should be good to go!
回答2:
B. Ruschill's answer seemed to have solved many peoples' problem, unfortunately it didn't for me. Nor did many solutions I found on the internets.
Turns out I had an outdated version of libjpeg. I fixed that by removing and re-installing using brew. This may happen for other image formats too. Perhaps doing the same for the respective libs might solve the problem.
TL;DR
brew remove libjpeg
brew install libjpeg
来源：https://stackoverflow.com/questions/9905499/carrierwave-mini-magick-gems-not-an-image-error