Ruby on Rails的事务操作

MyModel.transaction do
  begin
    @model.update_stuff
    @sub_model.update_stuff
    @sub_sub_model.update_stuff
  rescue ActiveRecord::StatementInvalid # or whatever 
    # rollback is automatic, but if you want to do something additional, 
    # add it here
  end
end

这里是 the docs for the transaction method .

可以同时在控制器中执行所有操作,包括:

around_filter :transactional

def transactional
  ActiveRecord::Base.transaction do
    yield
  end
end