Rails3 and Paperclip
- by arkannia
Hi,
I have migrated my application from rails 2.3 to rails3 and i have a problem with paperclip.
I saw there was a branch for rails3 on paperclip git.
So I added "gem 'paperclip', :git = 'git://github.com/thoughtbot/paperclip.git', :branch = 'rails3'" into the Gemfile and launch the command bundle install.
Once paperclip installed, the upload worked fine but not the styles. I saw a hack to fix it.
# in lib/paperclip/attachment.rb at line 293
def callback which #:nodoc:
# replace this line...
# instance.run_callbacks(which, @queued_for_write){|result,obj| result == false }
# with this:
instance.run_callbacks(which, @queued_for_write)
end
The styles are ok after that, but i'm not able to active the processor. My code is :
has_attached_file :image,
:default_url => "/images/nopicture.jpg",
:styles => { :large => "800x600>",
:cropped => Proc.new { |instance| "#{instance.width}x#{instance.height}>" },
:crop => "300x300>" },
:processors => [:cropper]
My processor is located in RAILS_APP/lib/paperclip_processors/cropper.rb and contains :
module Paperclip
class Cropper < Thumbnail
def transformation_command
if crop_command and !skip_crop?
crop_command + super.sub(/ -crop \S+/, '')
else
super
end
end
def crop_command
target = @attachment.instance
trans = "";
trans << " -crop #{target.crop_w}x#{target.crop_h}+#{target.crop_x}+#{target.crop_y}" if target.cropping?
trans << " -resize \"#{target.width}x#{target.height}\""
trans
end
def skip_crop?
["800x600>", "300x300>"].include?(@target_geometry.to_s)
end
end
end
My problem is that i got this error message : uninitialized constant Paperclip::Cropper
The cropped processor is not loaded.
Is anybody has an idea to fix that ?
For information my application works fine on rails 2.3.4.
