保持上传头像比例

app/controllers/avatar_controller.rb

@@ -55,9 +55,11 @@ class AvatarController < ApplicationController
     # saved = @avatar.save
     begin
       f = Magick::ImageList.new(diskfile)
-     proportion = (200.0/f[0].columns)
-     f.resize_to_fill!(200,200)
-     #f.scale!(50,50)
+      width = 300.0;
+      proportion = (width/f[0].columns)
+      height = (f[0].rows*proportion)
+      f.resize_to_fill!(width,height)
+      # f.scale!(width,height)
       f.write(diskfile)
     rescue Exception => e
       logger.error "[Error] avatar : avatar_controller#upload ===> #{e}"