1  
   2  require 'RMagick'
   3  
   4  class PhotoController < ApplicationController
   5  
   6  [...snip...]
   7  
   8      def render_resized_image
   9                  @photo=Photo.find(@params["id"])
  10  
  11                  maxw = @params["width"] != nil ? @params["width"].to_i : 90
  12                  maxh = @params["height"] != nil ? @params["height"].to_i : 90
  13                  aspectratio = maxw.to_f / maxh.to_f
  14  
  15  
  16                  pic = Magick::Image.from_blob(@photo.image)[0]
  17  
  18  
  19                  picw = pic.columns
  20                  pich = pic.rows
  21                  picratio = picw.to_f / pich.to_f
  22  
  23                  if picratio > aspectratio then
  24                          scaleratio = maxw.to_f / picw
  25                  else
  26                          scaleratio = maxh.to_f / pich
  27                  end
  28  
  29                  #breakpoint
  30  
  31                  thumb = pic.resize(scaleratio)
  32  
  33                  @response.headers["Content-type"]=@photo.mime
  34      end
  35  end