mongoid update_attributes改变了吗？

Question

我想update_attributes,而不是检查信息是否更改

您只需将此代码传递给rails console现有的rails + mongoid项目即可

class TestModel
  include Mongoid::Document
  include Mongoid::Timestamps
  field :name, type: String
end

test = TestModel.new({:name => "name 1"})
test.save()
=> true

test
=> created_at: 2012-11-14 13:48:26 UTC, updated_at: 2012-11-14 13:48:26 UTC

test.changed?
=> false
test.name_changed?
=> false

test.update_attributes({:name => "name 2"})
=> true

test.changed?
=> false
test.name_changed?
=> false

test
=> created_at: 2012-11-14 13:48:26 UTC, updated_at: 2012-11-14 13:49:23 UTC

我做错了什么或这是一个错误？

Answer 1

完美的逻辑.

脏的方法用于检查对象在保存之前是否已更改.根据定义,持久化对象没有挂起的更改.

你应该做:

test.assign_attributes(attributes)
test.changed? #=> true
test.save

请参阅方法定义.