我正在从 rails 控制台对此进行测试:
Credential.last.token => nil
Credential.last.update_attribute :token, '123' => true
Credential.last.token => nil
这是我的课:
class Credential
include Mongoid::Document
include Mongoid::Timestamps
field :_id, type: String
field :user_id, type: Integer
field :code, type: String
field :provider, type: String
field :token, type: String
end
我究竟做错了什么?