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POHow to crop image on upload with Rails, Carrierwave and Minimagick?
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  1. POHow to crop image on upload with Rails, Carrierwave and Minimagick?
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    copied!<p>I have read:</p> <ul> <li><a href="https://stackoverflow.com/questions/8418973/undefined-method-crop-using-carrierwave-with-minimagick-on-rails-3-1-3">Undefined Method crop! Using Carrierwave with MiniMagick on rails 3.1.3</a> </li> <li><a href="https://stackoverflow.com/questions/6757359/carrierwave-cropping">Carrierwave Cropping</a></li> <li><a href="http://pastebin.com/ue4mVbC8" rel="nofollow noreferrer">http://pastebin.com/ue4mVbC8</a></li> </ul> <p>And so I tried: </p> <pre><code># encoding: utf-8 class ProjectPictureUploader &lt; CarrierWave::Uploader::Base include CarrierWave::MiniMagick storage :file def store_dir "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}" end version :thumb do process :cropper # process :crop process resize_to_fit: [200, 200] end def cropper manipulate! do |img| # if model.crop_x.present? image = MiniMagick::Image.open(current_path) crop_w = (image[:width] * 0.8).to_i crop_y = (image[:height] * 0.8).to_i crop_x = (image[:width] * 0.1).to_i crop_y = (image[:height] * 0.1).to_i # end img = img.crop "#{crop_x}x#{crop_y}+#{crop_w}+#{crop_h}" img end end def crop if model.crop_x.present? resize_to_limit(700, 700) manipulate! do |img| x = model.crop_x y = model.crop_y w = model.crop_w h = model.crop_h w &lt;&lt; 'x' &lt;&lt; h &lt;&lt; '+' &lt;&lt; x &lt;&lt; '+' &lt;&lt; y img.crop(w) img end end end end </code></pre> <p>Then I used <strong>cropper</strong>: undefined local variable or method `crop_h' for /uploads/tmp/20121006-2227-4220-9621/thumb_Koala.jpg:#</p> <p>Then <strong>crop</strong>: undefined method `crop_x' for #</p> <p>Model:</p> <pre><code>class Project &lt; ActiveRecord::Base ... mount_uploader :picture, ProjectPictureUploader end </code></pre> <p>Rails 3.2, Win7, </p> <p>convert -version Version: ImageMagick 6.7.9-4 2012-09-08 Q16 <a href="http://www.imagemagick.org" rel="nofollow noreferrer">http://www.imagemagick.org</a> Copyright: Copyright (C) 1999-2012 ImageMagick Studio LLC Features: OpenMP</p>
 

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