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我可以锁定ActiveRecord对象而不重新加载吗?Rails ActiveRecord:锁无需重新加载
user = User.find(1)
=> #<User id: 1, name: "Ed" ...>
user.name = "Joe"
=> "Joe"
user.lock!
=> #<User id: 1, name: "Ed" ...>
我可以发送原始SQL“SELECT ... FOR UPDATE”,但它看起来不太干净。