gistfile1.rb

# Rails 事务
begin
  Post.transaction do 
    # 删除旧数据
    Post.delete_all
  
    # 例子 新数据
    datas [{:title => "title1", :slug => "title-1"},{:title => "Title 2", :slug => "Title 2"}]
    counter = 0
    datas.each do |d|
      post = Post.new(d)
      if not post.save
        raise "*** #{post.errors.full_messages}"
      end
    end
  end
  puts "=== Done"
rescue Exception => ex
  puts "*** transaction abored!"
  puts "*** errors: #{ex.message}"
end