Rails paperclip `not recognized by 'ident' command

Question

I get an error when trying to save png in a model with paperclip application.

My User Model:

 class User < ActieRecord::Base attr_accessible :icon has_attached_file :icon, :url => "/system/users/icon/:hash.:extension", :hash_secret => "superSecretHashSecret", :styles => { :medium => "300x300>", :thumb => "100x100>" } end 

Icon installation example:

 u = User.last u.icon = open(Rails.root + "spec/fixtures/files/example.png") u.save 

Example model error:

 :icon => ["/var/folders/43/810gn/T/example20121104-36855-1v7t136.png is not recognized by the 'identify' command."] 

There are several people who have sent similar questions to this, especially this one , but none of these solutions work for me.

My command_path parameter is set correctly:

 O:~ $ which identify /usr/local/bin/identify 

In development.rb

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

This can still be a problem. When I try to use `authentication directly, I get the following error:

 O:~ $ identify workspace/app/spec/fixtures/files/example.png dyld: Library not loaded: /usr/lib/libltdl.7.dylib Referenced from: /usr/local/bin/identify Reason: image not found Trace/BPT trap: 5 

Any suggestions on what's going on here?

I tried reinstalling ImageMagick

 brew unlink imagemagick brew install imagemagick 

Others recommended adding Rmagick . This is definitely not a prerequisite for using Paperclip, and it also did not help.

Another solution that has been proposed is to remove the :style property. However, this is not a solution. I need to do image processing.

I have a Paperclip working on another model in my project that processes documents that are not images / do not do any processing. Therefore, I know that this is probably related to this.

Any other suggestions to solve this?

Answer 1

As a result, the solution was installed by libtool . It was the best offer here . My problem turned out to be more complicated due to the fact that homebrew not updating and was in a state where it could not be updated without a forced check of the wizard.

For people who face this problem in the future, I recommend manually checking that the identify command really works, even if it is in your way.

 identify /path/to/some/image 

If this fails, something like:

 O:~ $ identify workspace/app/spec/fixtures/files/example.png dyld: Library not loaded: /usr/lib/libltdl.7.dylib Referenced from: /usr/local/bin/identify Reason: image not found Trace/BPT trap: 5 

In this case, try installing libtool .

 brew install libtool 

If this fails, run brew update . If it continues to work, make sure you have the latest Xcode installed and try updating it again.

You will find out that this worked if you can successfully use identity . It will look something like this:

 O:~ $ identify ~/workspace/app/spec/fixtures/files/example.png ~/workspace/app/spec/fixtures/files/example.png PNG 200x201 200x201+0+0 8-bit DirectClass 66.1KB 0.000u 0:00.000 

The answer from glebm may work very well. I did not watch this installer.

Answer 2

This is a problem installing ImageMagick.

Try first

 brew update brew upgrade imagemagick 

If this does not work, use the magick-installer script to solve this problem: https://github.com/maddox/magick-installer

 curl https://raw.github.com/maddox/magick-installer/master/magick-installer.sh | sh 

Alternatively, use the installer magic plug with newer versions of the dependent libraries:

 curl https://raw.github.com/GTSouza/magick-installer/master/magick-installer.sh | sh 

Answer 3

This may be caused by using older versions of Paperclip with newer and incompatible versions of the Cocaine gem. You can update the paperclip gem version using bundle update paperclip . He will update the paperclip and cocaine versions according to compatibility.

https://github.com/thoughtbot/paperclip/issues/1038

Answer 4

I just ran into this problem after upgrading to Mavericks on my Mac.

Here are the steps that fixed the problem:

 brew update brew install libtool brew link libtool brew upgrade imagemagick