something.rb

#! /usr/local/bin/ruby -w
# Sarup Banskota, 1 December 2014
require 'phototrim/version'
require 'RMagick'
include Magick

class Phototrim
  def self.trim(max_size, root_dir)
    Dir.foreach(root_dir) do |subdir|
      unless subdir == "." or subdir == ".."
        print "Processing images within " + subdir.to_s + "\n"
        Dir.foreach(File.join(root_dir, subdir)) do |victimfile|
          unless victimfile == "." or victimfile ==  ".." or File.extname(victimfile) == ".svg"
            print "Processing file " + victimfile + "\n"
            victim = ImageList.new(File.join(root_dir, subdir, victimfile))
            if victim.columns > max_size
              print victimfile.to_s + " is beyond " + max_size.to_s + "px wide, scaling down.. \n"
              victim = victim.scale(max_size.to_f/victim.columns)
              print "Scaled down " + victimfile.to_s + ".\n"
              victim.write(File.join(root_dir, subdir, victimfile))
            end 
          end
        end
      end
    end

    print "Done! \n"
  end
end

somethingelse.rb

#! /usr/local/bin/ruby -w
# Sarup Banskota, 1 December 2014
require 'phototrim/version'
require 'RMagick'
include Magick

class Phototrim
	def self.trim(max_size, root_dir)
		Dir.foreach(root_dir) do |subdir|
			unless subdir == "." or subdir == ".."
				print "Processing images within " + subdir.to_s + "\n"
				Dir.foreach(File.join(root_dir, subdir)) do |victimfile|
					unless victimfile == "." or victimfile ==  ".." or File.extname(victimfile) == ".svg"
						print "Processing file " + victimfile + "\n"
						victim = ImageList.new(File.join(root_dir, subdir, victimfile))
						if victim.columns > max_size
							print victimfile.to_s + " is beyond " + max_size.to_s + "px wide, scaling down.. \n"
							victim = victim.scale(max_size.to_f/victim.columns)
							print "Scaled down " + victimfile.to_s + ".\n"
							victim.write(File.join(root_dir, subdir, victimfile))
						end 
					end
				end
			end
		end

		print "Done! \n"
	end
end

view.html.haml

        = form_for(resource, as: resource_name, url: registration_path(resource_name), html: { method: :put }) do |f|

          = f.check_box :sponsoring_needed
          Sponsorship Needed

           
          = f.label :email
          = f.email_field :email, placeholder: current_user.email, required: "required"
          - if devise_mapping.confirmable? && resource.pending_reconfirmation?
            Currently waiting confirmation for: #{resource.unconfirmed_email}
          = f.label :password
          %i (leave blank if you don't want to change it)
          = f.password_field :password, autocomplete: "off"
          = f.label :password_confirmation
          = f.password_field :password_confirmation, autocomplete: "off"
          = f.label :current_password
          %i (we need your current password to confirm your changes)
          = f.password_field :current_password, autocomplete: "off", required: "required"
          = f.submit "Update"