ruby-on-rails - 为什么这个 Rails 事务无法锁定？

Question

为什么我不能锁定这条记录？

  User.transaction do
    p current_user.inspect
    p "************"
    user = current_user.lock!
    p "************"

日志

"#<User id: 1, username: ...
"************"
PG::InFailedSqlTransaction: ERROR:  current transaction is aborted, commands ignored until end of transaction block
: SELECT  "users".* FROM "users"  WHERE "users"."id" = $1 LIMIT 1 FOR UPDATE

ActiveRecord::StatementInvalid (PG::InFailedSqlTransaction: ERROR:  current transaction is aborted, commands ignored until end of transaction block
: SELECT  "users".* FROM "users"  WHERE "users"."id" = $1 LIMIT 1 FOR UPDATE):
  app/controllers/users_controller.rb:294:in `block in withdrawBTC'

控制台

我可以从控制台锁定它。

irb(main):021:0> User.transaction do
irb(main):022:1* u.lock!
irb(main):023:1> end

版本

rails 4.0.0

Answer 1

奇怪，我重新启动了服务器，但它越过了那条线。我不知道为什么，因为它处于开发模式。 Rails，你太脆弱了!