Akka HTTP，Spray Json和选项字段根据要求失败

Question

我有一个案例课：

case class OpcTagPlaybook(name: String, tags: Seq[OpcTagAtTime], looped: Boolean, enabled: Option[String])

带有一个可选的启用字段，它将包含一个日期。 Spray Json描述了编码/解码：

implicit val opcTagPlaybookFormat = jsonFormat4(OpcTagPlaybook)

还有akka http中的路线：

post {
  entity(as[OpcTagPlaybook]) { playbook =>
    val playbookCreated: Future[_] =
      (opcTagPlaybookActor ? UpsertPlaybook(playbook))
    onSuccess(playbookCreated) { _ =>
      log.info("Created playbook [{}]", playbook.name)
      complete((StatusCodes.Created, "ok"))
    }
  }
})

由于某些原因，没有createdAt字段的发布失败：

发布：

{"name": "test1",
"tags":[{"offset": 100, "tag": "hello", "value": "yo"}],
"looped": true
}

失败：

The request content was malformed:
Object is missing required member 'enabled'

如果我发布的帖子给了我另一个错误：

 {"name": "test1",
 "tags":[{"offset": 100, "tag": "hello", "value": "yo"}],
 "looped": true,
 "enabled": "2018-08-08"
 }

给予

The request content was malformed:
spray.json.JsString cannot be cast to scala.Option

我假设这是akka http之间的相互作用，所以我将更加手动地处理输入，但是我只是想了解我在这里做错了什么。