如何在trait中找到scala对象

我使用slick 1.0.1版本进行播放，这是我的代码： User.scala：

case class User(id: Option[Int], name : String)
trait UserComponent {
this: Profile =>

import profile.simple._

object Users extends Table[User]("users") {
def id = column[Int]("id", O.PrimaryKey)
def name =  column[String]("name", O.NotNull)
def * = id.? ~ name <> (User, User.unapply _)

def add(user: User)(implicit session: Session) = {
  this.insert(user)
}

def countByName(name: String)(implicit session: Session) = {
  (for {
    user <- Users
    if (user.name === name)
  } yield(user)).list.size
}

}
}

错误是：

[error] F:\mysource\play-slick\app\models\Resource.scala:14: not found: value Us
erComponent
[error]   def withuser = foreignKey("User_FK", owner, UserComponent.Users)(_.id)
[error]                                               ^                ^

试一试

[error] F:\mysource\play-slick\app\models\Resource.scala:14: not found: value Us
erComponent
[error]   def withuser = foreignKey("User_FK", owner, UserComponent.Users)(_.id)
[error]                                               ^                ^

trait ResourceComponent {
 this: Profile with UserComponent => // depend on the user component
  object Resources extends Table[Resource]("RESOURCE") {
    ...
    def withuser = foreignKey("User_FK", owner, Users)(_.id)
  }
}