新增：许可证排序字段

app/models/license.rb

@@ -7,10 +7,12 @@
 #  content    :text(65535)
 #  created_at :datetime         not null
 #  updated_at :datetime         not null
-#  is_secret  :boolean          default("0")
+#  position   :integer          default("0")
 #
 
 class License < ApplicationRecord
+  default_scope { order(position: :desc) }
+
   include Projectable
 
   validates :name, :content, presence: true