检查播放当前模式会发生错误 [英] Checking a play current mode makes an error occur

问题描述

我正在尝试在Play应用程序中获取当前模式:

I'm trying to get the current mode in Play application:

object Global extends GlobalSettings {
  val myVal = {
    val (a, b, c) = Play.current.mode match {
      case Mode.Dev | Mode.Test => ("a", "b", "c")
      case Mode.Prod => ("d", "e", "f")
    }

    new myClass(a, b, c)
   }
}

该错误发生在运行时说Cannot initialize the custom Global object (%s) (perhaps it's a wrong reference?)，通过stacktrace我可以看到它发生在val MyVal = {...

The error occurs in runtime saying Cannot initialize the custom Global object (%s) (perhaps it's a wrong reference?) and by stacktrace I can see it happens at val MyVal = {...

当我从Global中删除该字段时，错误将消失.

When I remove that field from Global then the error will disappear.

这是怎么了?

推荐答案

我几乎不相信您想要做onStart或onStop或其他活动，但不仅仅是因为;)

I hardly believe that you want to do something onStart or onStop, or maybe or some other event, but not just because ;)

object Global extends GlobalSettings {
  override def onStart(app: Application) {
    // put your code here....
  }
}

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