将上传的头像压缩至50x50大小。请确保运行环境RMagick可用。

app/controllers/avatar_controller.rb

@@ -53,6 +53,13 @@ class AvatarController < ApplicationController
    # @avatar.source_id = User.current.id
    # @avatar.image_file = params[:filename].presence || Redmine::Utils.random_hex(16)
    # saved = @avatar.save
+   begin
+   f= Magick::ImageList.new(diskfile)
+   f.scale!(50,50)
+   f.write(diskfile)
+   rescue
+   end
+
     
     respond_to do |format|
       format.js