Casbah: implicit visible view error

In a Play app using Salat and Casbah, I am trying to de-serialize DBObject

to an object of type Task

, but I am getting this error when called .asObject

:

Missing implicit view from com.mongod.casbah.Imports.DBObject => com.mongodb.casbah.Imports.MongoDBObject. An error occurred in the application with default arguments.

The object is serialized correctly with .asDBObject

and written to the database as expected.

What is causing this behavior, and what can be done to resolve it? The model was considered here:

package models

import db.{MongoFactory, MongoConnection}

import com.novus.salat._
import com.novus.salat.global._
import com.novus.salat.annotations._
import com.mongodb.casbah.Imports._
import com.mongodb.casbah.commons.Imports._
import play.api.Play


case class Task(label: String, _id: ObjectId=new ObjectId)

object Task {

  implicit val ctx = new Context {
    val name = "Custom_Classloader"
  }

  ctx.registerClassLoader(Play.classloader(Play.current))

  val taskCollection = MongoFactory.database("tasks")

  def create(label: String): Task = {
    val task = new Task(label)
    val dbObject = grater[Task].asDBObject(task)
    taskCollection.save(dbObject)
    grater[Task].asObject(dbObject)
  }

  def all(): List[Task] = {
    val results = taskCollection.find()
    val tasks = for (item <- results) yield grater[Task].asObject(item)
    tasks.toList
  }
}

      

        
        
        
      

    

Versions

casbah: "2.8.1"
scala: "2.11.6"
salat: "1.9.9"