Paperclip::NotIdentifiedByImageMagickError image is not recognized by the 'identify' command - ruby-on-rails

Question

i´m getting this error when editing a model specifically when i delete an image associated to it and I select another:
Paperclip::NotIdentifiedByImageMagickError in Admin/packsController#update
Chrysanthemumprueba4.jpg is not recognized by the 'identify' command.
C:/Users/.../vendor/plugins/thoughtbot-paperclip-fc792c8/lib/paperclip/geometry.rb:24:in `from_file'
But when i create a new pack and I select images for it, it works ok.
I have two tables: packs and pack_images,and pack_images has the photos for the pack associated, here are the relations:
class Pack < ActiveRecord::Base
has_many :pack_images, :dependent => :destroy
end
class PackImage < ActiveRecord::Base
belongs_to :pack
attr_accessor :height, :width
has_attached_file :photo, :url => "/:attachment/:class/:id/:style_:basename.:extension", :styles => {:principal => "240x240>", :original => "400x400>", ...}
end
This is the controller's action that throws me the error:
def update
#pack = Pack.find(params[:id])
#pack.pack_products
unless params[:pack][:pack_images_attributes].nil?
params[:pack][:pack_images_attributes].count.times do |i|
unless params[:pack][:pack_images_attributes][:"#{i.to_s}"][:photo].blank?
file = params[:pack][:pack_images_attributes][:"#{i.to_s}"][:photo]
dimensions = Paperclip::Geometry.from_file(file)
#pack.pack_images[i].width = dimensions.width
#pack.pack_images[i].height = dimensions.height
end
end
end
respond_to do |format|
#pack.update_attributes(params[:pack])
format.html { redirect_to(admin_pack_path(#pack.id), :notice => 'Pack updated') }
end
I noticed that, when updating I get less parameters (only the photo's name) than when creating (photo's name,file type,width,height,etc).
I hope you can help me
Thank you very much

Answer 1

it used to work fine for pdf and images, tried out for an hour or so, followed everything I googled later the problem was found in my model has_attached_file :attachment,
:styles => {:original=> "125x125#"}
had to comment this line, and it worked for other attachments like docx or odt etc..
so in your case :styles => {:principal => "240x240>", :original => "400x400>"}
check out and comment.

Answer 2

Locate the path of the identify command like this:
$ which identify
For me the above command prints this: /usr/local/bin/identify
Add this in some initializer file:
Paperclip::Attachment.default_options[:command_path] = "/usr/local/bin"

Answer 3

One reason this error occurs is when you try to determine the dimensions of an image that does not exist:
Paperclip::Geometry.from_file(nil)
This command will hang and cause this error.

Answer 4

Try to run the "identify" command from ImageMagick on this image. It seems something with your ImageMagick install.

Answer 5

I had the exact same issue. Windows 8 64bit, Rails 4, ImageMagick-6.8.7-1-Q16-x64-static.exe. Do this :
In the root of your rails app (from Git Bash)
$ which identify
/c/Program Files/ImageMagick-6.8.7-Q16/./identify
Then
$ cd "/c/Program Files/ImageMagick-6.8.7-Q16"
Don't forget the quotes. Copy all executables to you /bin directory. I actually copied all these files to be certain.
$ cp * /bin
And voila paperclip works!