Packages

  • package root
    Definition Classes
    root
  • package play

    Play framework.

    Play framework.

    Play

    http://www.playframework.com

    Definition Classes
    root
  • package api

    Contains the public API for Scala developers.

    Contains the public API for Scala developers.

    Read configuration 
    val poolSize = configuration.getInt("engine.pool.size")
    Use the logger 
    Logger.info("Hello!")
    Define a Plugin 
    class MyPlugin(app: Application) extends Plugin
    Create adhoc applications (for testing) 
    val application = Application(new File("."), this.getClass.getClassloader, None, Play.Mode.DEV)
    Definition Classes
    play
  • package libs

    Contains various APIs that are useful while developing web applications.

    Contains various APIs that are useful while developing web applications.

    Definition Classes
    api
  • package json

    Json API

    Json API

    For example:

    import play.api.libs.json._
import play.api.libs.functional.syntax._

case class User(id: Long, name: String, friends: Seq[User] = Seq.empty)
object User {

  // In this format, an undefined friends property is mapped to an empty list
  implicit val format: Format[User] = (
    (__ \ "id").format[Long] and
    (__ \ "name").format[String] and
    (__ \ "friends").lazyFormatNullable(implicitly[Format[Seq[User]]])
      .inmap[Seq[User]](_ getOrElse Seq.empty, Some(_))
  )(User.apply, unlift(User.unapply))
}

object MyController extends play.api.mvc.Controller {
   def displayUserAsJson(id: String) = Action {
      Ok(Json.toJson(User(id.toLong, "myName")))
   }

   def saveUser(jsonString: String)= Action {
     val user = Json.parse(jsonString).as[User]
     //myDataStore.save(user)
     Ok
   }
}
    Definition Classes
    libs
  • trait DefaultReads extends LowPriorityDefaultReads

    Default deserializer type classes.

    Default deserializer type classes.

    Definition Classes
    json
  • ArrayNodeReads
  • BigIntReads
  • BigIntegerReads
  • BooleanReads
  • ByteReads
  • DoubleReads
  • FloatReads
  • IntReads
  • IsoDateReads
  • JsArrayReads
  • JsBooleanReads
  • JsNumberReads
  • JsObjectReads
  • JsStringReads
  • JsValueReads
  • JsonNodeReads
  • LongReads
  • ObjectNodeReads
  • ShortReads
  • StringReads
  • TemporalParser
  • UUIDReader

implicit object JsValueReads extends Reads[JsValue]

Deserializer for JsValue.

Source
Reads.scala
Linear Supertypes
Reads[JsValue], AnyRef, Any
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. JsValueReads
  2. Reads
  3. AnyRef
  4. Any
  1. Hide All
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Visibility
  1. Public
  2. Protected

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##: Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. def andThen[B](rb: Reads[B])(implicit witness: <:<[JsValue, JsValue]): Reads[B]
    Definition Classes
    Reads
  5. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  6. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @HotSpotIntrinsicCandidate() @native()
  7. def collect[B](error: JsonValidationError)(f: PartialFunction[JsValue, B]): Reads[B]
    Definition Classes
    Reads
  8. def composeWith[B <: JsValue](rb: Reads[B]): Reads[JsValue]

    Creates a new Reads, which first passes the input JSON to rb, and then it executes this Reads on the pre-processed JSON (if rb has successfully handled the input JSON).

    Creates a new Reads, which first passes the input JSON to rb, and then it executes this Reads on the pre-processed JSON (if rb has successfully handled the input JSON).

    Definition Classes
    Reads
  9. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  10. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  11. def filter(error: JsonValidationError)(f: (JsValue) => Boolean): Reads[JsValue]
    Definition Classes
    Reads
  12. def filter(f: (JsValue) => Boolean): Reads[JsValue]
    Definition Classes
    Reads
  13. def filterNot(error: JsonValidationError)(f: (JsValue) => Boolean): Reads[JsValue]
    Definition Classes
    Reads
  14. def filterNot(f: (JsValue) => Boolean): Reads[JsValue]
    Definition Classes
    Reads
  15. def flatMap[B](f: (JsValue) => Reads[B]): Reads[B]
    Definition Classes
    Reads
  16. def flatMapResult[B](f: (JsValue) => JsResult[B]): Reads[B]

    Creates a new Reads, which transforms the successful result from the current instance using the given function.

    Creates a new Reads, which transforms the successful result from the current instance using the given function.

    f

    the function applied on the successful A value

    final class Foo private(val code: String) extends AnyVal

val A = new Foo("A")
val B = new Foo("B")

import play.api.libs.json.Reads

val r: Reads[Foo] = implicitly[Reads[String]].flatMapResult {
  case "A" => JsSuccess(A)
  case "B" => JsSuccess(B)
  case _   => JsError("error.expected.foo")
}
    Definition Classes
    Reads
  17. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @HotSpotIntrinsicCandidate() @native()
  18. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @HotSpotIntrinsicCandidate() @native()
  19. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  20. def map[B](f: (JsValue) => B): Reads[B]

    Create a new Reads which maps the value produced by this Reads.

    Create a new Reads which maps the value produced by this Reads.

    B

    The type of the value produced by the new Reads.

    f

    the function applied on the result of the current instance, if successful

    Definition Classes
    Reads
  21. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  22. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @HotSpotIntrinsicCandidate() @native()
  23. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @HotSpotIntrinsicCandidate() @native()
  24. def orElse(v: Reads[JsValue]): Reads[JsValue]

    Creates a new Reads, based on this one, which first executes this Reads' logic then, if this Reads resulted in a JsError, runs the second Reads on the JsValue.

    Creates a new Reads, based on this one, which first executes this Reads' logic then, if this Reads resulted in a JsError, runs the second Reads on the JsValue.

    v

    the Reads to run if this one gets a JsError

    returns

    A new Reads with the updated behavior.

    Definition Classes
    Reads
  25. def preprocess(f: PartialFunction[JsValue, JsValue]): Reads[JsValue]

    Creates a new Reads, which first transforms the input JSON using the given tranformer, and then it executes this Reads on the pre-processed JSON.

    Creates a new Reads, which first transforms the input JSON using the given tranformer, and then it executes this Reads on the pre-processed JSON.

    Definition Classes
    Reads
  26. def reads(json: JsValue): JsSuccess[JsValue]

    Convert the JsValue into a A

    Convert the JsValue into a A

    Definition Classes
    JsValueReads → Reads
  27. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  28. def toString(): String
    Definition Classes
    AnyRef → Any
  29. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  30. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  31. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  32. def widen[B >: JsValue]: Reads[B]

    Widen this Reads.

    Widen this Reads.

    import play.api.libs.json.Reads

sealed trait Animal
case class Dog(name: String) extends Animal
case class Cat(name: String) extends Animal

def simple(r: Reads[Dog]): Reads[Animal] = r.widen[Animal]
    Definition Classes
    Reads

Deprecated Value Members

  1. def compose[B <: JsValue](rb: Reads[B]): Reads[JsValue]
    Definition Classes
    Reads
    Annotations
    @deprecated
    Deprecated

    (Since version 2.7.0) Use composeWith

  2. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable]) @Deprecated
    Deprecated

    (Since version 9)

Inherited from Reads[JsValue]

Inherited from AnyRef

Inherited from Any

Ungrouped