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PORails3 and Paperclip
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  1. PORails3 and Paperclip
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    copied!<p>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.</p> <p>So I added "gem 'paperclip', :git => 'git://github.com/thoughtbot/paperclip.git', :branch => 'rails3'" into the Gemfile and launch the command bundle install.</p> <p>Once paperclip installed, the upload worked fine but not the styles. I saw a hack to fix it.</p> <pre><code># 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 </code></pre> <p>The styles are ok after that, but i'm not able to active the processor. My code is : </p> <pre><code>has_attached_file :image, :default_url =&gt; "/images/nopicture.jpg", :styles =&gt; { :large =&gt; "800x600&gt;", :cropped =&gt; Proc.new { |instance| "#{instance.width}x#{instance.height}&gt;" }, :crop =&gt; "300x300&gt;" }, :processors =&gt; [:cropper] </code></pre> <p>My processor is located in RAILS_APP/lib/paperclip_processors/cropper.rb and contains : </p> <pre><code>module Paperclip class Cropper &lt; 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 &lt;&lt; " -crop #{target.crop_w}x#{target.crop_h}+#{target.crop_x}+#{target.crop_y}" if target.cropping? trans &lt;&lt; " -resize \"#{target.width}x#{target.height}\"" trans end def skip_crop? ["800x600&gt;", "300x300&gt;"].include?(@target_geometry.to_s) end end end </code></pre> <p>My problem is that i got this error message : uninitialized constant Paperclip::Cropper The cropped processor is not loaded.</p> <p>Is anybody has an idea to fix that ?</p> <p>For information my application works fine on rails 2.3.4.</p>
 

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