trustieforge/app/models/web_footer_company.rb

class WebFooterCompany < ActiveRecord::Base
  attr_accessible :logo_size, :name, :url
  validates :name, presence: true, length: { maximum: 500 }
  validates :url,  length: { maximum: 500 },
            format: { with: /(http|https):\/\/[\w\-_]+(\.[\w\-_]+)+([\w\-\.,@?^=%&amp;:\/~\+#]*[\w\-\@?^=%&amp;\/~\+#])?/,
                      message: :invalid
            }
end