我想更新update_attributes,而不是检查信息是否已更改
您只需将此代码传递给现有rails + mongoid项目中的rails console
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?
答案 0 :(得分:8)
完全合乎逻辑。
脏方法用于检查对象是否已经更改保存之前。根据定义,持久化对象没有挂起的更改。
你应该这样做:
test.assign_attributes(attributes)
test.changed? #=> true
test.save