https://ruby-china.org/leebo-github en-us <p>模型</p> <pre class="highlight plaintext"><code>User name:string Profile age:integer User has_one :profile Profile belongs_to :user User.first.update(name: 'xxxx') </code></pre> <p>会触发</p> <pre class="highlight plaintext"><code>D, [2018-12-18T12:33:25.612410 #31808] DEBUG -- : MONGODB | localhost:27017 | m_development.find | STARTED | {"find"=&gt;"users", "filter"=&gt;{}, "sort"=&gt;{"_id"=&gt;1}, "limit"=&gt;1, "singleBatch"=&gt;true, "lsid"=&gt;{"id"=&gt;&lt;BSON::Binary:0x70240119236940 type=uuid data=0x72ff27da5b0142c9...&gt;}} D, [2018-12-18T12:33:25.614074 #31808] DEBUG -- : MONGODB | localhost:27017 | m_development.find | SUCCEEDED | 0.001s D, [2018-12-18T12:33:25.624208 #31808] DEBUG -- : MONGODB | localhost:27017 | m_development.find | STARTED | {"find"=&gt;"profiles", "filter"=&gt;{"user_id"=&gt;BSON::ObjectId('5c17c80178d1e2347dca77b2')}, "limit"=&gt;1, "singleBatch"=&gt;true, "lsid"=&gt;{"id"=&gt;&lt;BSON::Binary:0x70240119236940 type=uuid data=0x72ff27da5b0142c9...&gt;}} D, [2018-12-18T12:33:25.624993 #31808] DEBUG -- : MONGODB | localhost:27017 | m_development.find | SUCCEEDED | 0.001s D, [2018-12-18T12:33:25.626517 #31808] DEBUG -- : MONGODB | localhost:27017 | m_development.update | STARTED | {"update"=&gt;"users", "ordered"=&gt;true, "lsid"=&gt;{"id"=&gt;&lt;BSON::Binary:0x70240119236940 type=uuid data=0x72ff27da5b0142c9...&gt;}, "updates"=&gt;[{"q"=&gt;{"_id"=&gt;BSON::ObjectId('5c17c80178d1e2347dca77b2')}, "u"=&gt;{"$set"=&gt;{"name"=&gt;"xxxx"}}, "multi"=&gt;false, "upsert"... D, [2018-12-18T12:33:25.627230 #31808] DEBUG -- : MONGODB | localhost:27017 | m_development.update | SUCCEEDED | 0.001s </code></pre> <p>我试了用 ActiveRecord 不会有这样的问题 这块有点搞不懂 为什么要去查询 profiles 呢</p> leebo-github Tue, 18 Dec 2018 12:34:06 +0800 https://ruby-china.org/topics/37911 https://ruby-china.org/topics/37911