Question

尝试从2.5.x迁移到2.6.x.我有特质安全与旧方法IsAuthenticatedAsync，我正在尝试编写新方法IsAuthenticatedAsyncNew。编译器说Action.async已被弃用，所以我试图用ActionBuilder替换Action.asyinc块，但我很难，因为我找不到好的2.6.x示例如何做到这一点。

trait Secured {
  private def username(request: RequestHeader) = request.session.get("username")
  private def onUnauthorized(request: RequestHeader) = Results.Redirect(routes.Application.login())
  def userService: UserService
  def cc: ControllerComponents

  /**
   * Async action for authenticated users.
   */
  def IsAuthenticatedAsync(f: => User => Request[AnyContent] => Future[Result]) = Security.Authenticated(username, onUnauthorized) { user =>
    Action.async{ implicit request =>
      val _user = userService.findByUsername(user)
      if(_user.nonEmpty)
        f(_user.get)(request)
      else
        Future.successful(Results.Redirect(routes.Application.login()))
    }
  }


  def IsAuthenticatedAsyncNew(f: => User => Request[AnyContent] => Future[Result]) = new ActionBuilder[Request, AnyContent] {
    override def invokeBlock[A](request: Request[A], block: Request[A] => Future[Result]) = {
      val username = request.session.get("username")
      val user = userService.findByUsername(username.get)
      user match {
        case Some(user) => f(user)(request)
        case None => Future.successful(Results.Redirect(routes.Application.login()))
      }
    }


    override protected def executionContext: ExecutionContext = cc.executionContext
    override def parser: BodyParser[AnyContent] = cc.parsers.defaultBodyParser
  }

}

编译器返回错误

Error:(40, 36) type mismatch;
 found   : play.api.mvc.Request[A]
 required: play.api.mvc.Request[play.api.mvc.AnyContent]
        case Some(user) => f(user)(request)

如果我将方法的足迹改为

 override def invokeBlock(request: Request[AnyContent], block: Request[AnyContent] => Future[Result])

然后它没有任何东西......它可以这样做吗？

Answer 1

游戏2.6中的

Action在BaseController特征中定义为

def Action: ActionBuilder[Request, AnyContent] = controllerComponents.actionBuilder

这意味着您只需将Action.async替换为cc.actionBuilder.async(...)

即可

甚至复制该方法

def Action = cc.actionBuilder

并像以前一样使用Action.async。

PlayFramework迁移2.5.x到2.6.x已弃用Action.async

1 个答案: