rails使用gem 'annotate'给model routes添加注释

The schema comment looks like this:

# == Schema Info
#
# Table name: line_items
#
# id :integer(11) not null, primary key
# quantity :integer(11) not null
# product_id :integer(11) not null
# unit_price :float
# order_id :integer(11)
#

 class LineItem < ActiveRecord::Base
   belongs_to :product
 end

github文档

generate annotation for a single model ：

bundle exec annotate --exclude tests,fixtures,factories -i app/models/my_model.rb

带commet

bundle exec annotate --with-comment --exclude tests,fixtures,factories -i app/models/my_model.rb