Ruby on rails Mongoid在rails控制台中保存记录时抛出错误

我正在使用rails

4.2.0。beta2
mongoid 4.0.0
在浏览器中运行良好，但当我在rails控制台中尝试时，我可以实例化对象，但它不会保存记录，而是抛出以下错误

Mongoid::Errors::NoSessionConfig:
Problem:
No configuration could be found for a session named 'default'.
Summary:
When attempting to create the new session, Mongoid could not find a session configuration for the name: 'default'. This is necessary in order to know the host, port, and options needed to connect.
Resolution:
Double check your mongoid.yml to make sure under the sessions key that a configuration exists for 'default'. If you have set the configuration programatically, ensure that 'default' exists in the configuration hash.
.......

蒙哥德

development:
  sessions:
    default:
      database: okaab_development
      hosts:
        - localhost:27017
      options:
  options:
test:
  sessions:
    default:
      database: okaab_test
      hosts:
        - localhost:27017
      options:
        read: primary
        max_retries: 1
        retry_interval: 0

正如信息所示：当前版本的Rails/Mongoid仍然存在这个问题。
原因与spring有关，一旦停用，它就可以正常工作。
Rails g mongoid:config解决了我的问题