Scala Play Json Reads

json, playframework, playframework-json, scala

Solution

Just add the `business` key in the path:

 implicit val bsnsRds = (
      (__ \ "business" \ "name").read[String] ~
      (__ \ "business" \ "preferredUrl").read[String] ~
      (__ \ "business" \ "businessPhone").read[String] ~
      (__ \ "business" \ "retailer").read[Retailer](rltRds)
    )(Business)

Problem

I have a sample code as below. ``` import play.api.libs.json._ import play.api.libs.functional.syntax._ import play.api.data.validation.ValidationError import play.api.libs.json.Reads._ case class Retailer(firstName:String,lastName:String,email:String,mobileNo:String,password:String) case class Business(name:String,preferredUrl:String,businessPhone:String,retailer:Retailer) object JsonTest { val jsonValue = """ { "business": { "name":"Some Business Name", "preferredUrl":"someurl", "businessPhone":"somenumber", "retailer": { "firstName":"Some", "lastName":"One", "email":"someone@somewhere.com", "mobileNo":"someothernumber", "password":"$^^HFKH*" } } } """ def printJson ={ implicit val rltRds = ( (__ \ "firstName").read[String] ~ (__ \ "lastName").read[String] ~ (__ \ "email").read[String] ~ (__ \ "mobileNo").read[String] ~ (__ \ "password").read[String] )(Retailer) implicit val bsnsRds = ( (__ \ "name").read[String] ~ (__ \ "preferredUrl").read[String] ~ (__ \ "businessPhone").read[String] ~ (__ \ "retailer").read[Retailer](rltRds) )(Business) val buisness = Json.parse(jsonValue).validate[Business](bsnsRds) val bus = new Business("Some Business","somebusinessurl","somenumber", new Retailer("Some","One","someone@somewhere.com","someothernumber","$^^HFKH*")) //val json = Json.toJson(bus) println(buisness) } def main(args: Array[String]): Unit = { printJson } } ``` I get Json Validation Error when I try to parse the json into Scala object (Business Class in this case). The error is `JsError(List((/retailer,List(ValidationError(validate.error.missing-path,WrappedArray()))), (/preferredUrl,List(ValidationError(validate.error.missing-path,WrappedArray()))), (/name,List(ValidationError(validate.error.missing-path,WrappedArray()))), (/businessPhone,List(ValidationError(validate.error.missing-path,WrappedArray()))))) ` However if my json is like ``` val jsonValue = """ { "name":"Some Business Name", "preferredUrl":"someurl", "businessPhone":"somenumber", "retailer": { "firstName":"Some", "lastName":"One", "email":"someone@somewhere.com", "mobileNo":"someothernumber", "password":"$^^HFKH*" } } """ ``` Note that the outer bracket "{" and the "business:" key are removed. I get a JsSuccess. How do I write the reads for the Json as in the first case? Also, how can I do it in a generic way? Please help.

Original source