ReactiveMongoDB插件與遞歸結構

Question

我使用Play框架2.2.1，並與插件 「org.reactivemongo」 %% 「play2-reactivemongo」 ％ 「0.10.2」

我的模型reactivemongo：

package models 

import system.db.Mongo 
import play.api.libs.concurrent.Execution.Implicits.defaultContext 
import play.api.libs.json.Json 
import scala.concurrent.Awaitable 
import scala.concurrent.duration._ 
import scala.concurrent.Await 

object Template { 
    import system.db.Mongo.JsonFormats._ 
    def findAll = Await.result(Mongo.templates.find(Json.obj()).cursor[Template].collect[List](), 3 seconds) 
} 

case class Template(name: String, marks: List[Mark], sections: List[Section]) 

case class Mark(name: String, description: String, index: Int, indexTree: String, dataType: String, rate: Int) 

case class Section(name: String, index: Int, indexTree: String, marks: List[Mark], section: List[Section]) 

Mongo.templates是JSONCollection：val templates: JSONCollection = db.collection[JSONCollection]("Templates")

JsonFormats：

object JsonFormats { 
    implicit val markFormat = Json.format[Mark] 
    implicit val sectionFormat = Json.format[Section] 
    implicit val templateFormat = Json.format[Template] 
} 

當我打電話Template.findAll與數據

{ 
    "name": "Caption", 
    "sections": [{ 
     "name": "Section name", 
     "index": 1, 
     "indexTree": "1", 
     "marks": [], 
     "sections": [] 
    }], 
    "marks": [] 
} 

有一個執行異常： [RuntimeException的：JsError（列表（（/切片（0）/部分，列表（ValidationError（error.path.missing，WrappedArray（） ）））））]

，但它與空部分工作：{"name": "Caption", "sections": [], "marks": []}

這是驅動程序支持recoursive結構？

Answer 1

好吧。我已經解決了它重命名申請部分到部分：

case class Template(name: String, marks: List[Mark], sections: List[Section]) 

case class Mark(name: String, description: String, index: Int, indexTree: String, dataType: String, rate: Int) 

case class Section(name: String, index: Int, indexTree: String, marks: List[Mark], parts: List[Section]) 

收藏：

{ 
    "name": "Caption", 
    "sections": [{ 
     "name": "Section name", 
     "index": 1, 
     "indexTree": "1", 
     "marks": [], 
     "parts": [{ 
      ... 
      "parts": [...] 
     }, ...] 
    }], 
    "marks": [] 
}