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.

    Access the current Play application 
    import play.api.Play.current
    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 For example:

    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))
}

//then in a controller:

object MyController extends 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
  • case class JsPath(path: List[PathNode] = List()) extends Product with Serializable

    Path to a JsValue; As for path to file on FS, there may not be any matching value in the parsed JSON.

    Path to a JsValue; As for path to file on FS, there may not be any matching value in the parsed JSON.

    Definition Classes
    json
  • json

object json

Source
JsPath.scala
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  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. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  6. def copyFrom[A <: JsValue](reads: Reads[A]): Reads[JsObject]

    ( \ 'key).json.copyFrom(reads) is a Reads[JsObject] that: - copies a JsValue using passed Reads[A] - creates a new branch from JsPath and copies previous value into it

    ( \ 'key).json.copyFrom(reads) is a Reads[JsObject] that: - copies a JsValue using passed Reads[A] - creates a new branch from JsPath and copies previous value into it

    Useful to copy a value from a Json branch into another branch

    Example :

    val js = Json.obj("key1" -> "value1", "key2" -> "value2")
js.validate( (__ \ 'key3).json.copyFrom((__ \ 'key2).json.pick))
=> JsSuccess({"key3":"value2"},/key2)
  7. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  8. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  9. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  10. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  11. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  12. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  13. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  14. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  15. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  16. def pick: Reads[JsValue]

    ( \ 'key).json.pick is a Reads[JsValue] that: - picks the given value at the given JsPath (WITHOUT THE PATH) from the input JS - validates this element as an object of type JsValue - returns a JsResult[JsValue]

    ( \ 'key).json.pick is a Reads[JsValue] that: - picks the given value at the given JsPath (WITHOUT THE PATH) from the input JS - validates this element as an object of type JsValue - returns a JsResult[JsValue]

    Useful to pick a JsValue at a given JsPath

    Example :

    val js = Json.obj("key1" -> "value1", "key2" -> "value2")
js.validate((__ \ 'key2).json.pick)
=> JsSuccess("value2",/key2)
  17. def pick[A <: JsValue](implicit r: Reads[A]): Reads[A]

    ( \ 'key).json.pick[A <: JsValue] is a Reads[A] that: - picks the given value at the given JsPath (WITHOUT THE PATH) from the input JS - validates this element as an object of type A (inheriting JsValue) - returns a JsResult[A]

    ( \ 'key).json.pick[A <: JsValue] is a Reads[A] that: - picks the given value at the given JsPath (WITHOUT THE PATH) from the input JS - validates this element as an object of type A (inheriting JsValue) - returns a JsResult[A]

    Useful to pick a typed JsValue at a given JsPath

    Example :

    val js = Json.obj("key1" -> "value1", "key2" -> 123)
js.validate((__ \ 'key2).json.pick[JsNumber])
=> JsSuccess(JsNumber(123),/key2)
  18. def pickBranch: Reads[JsObject]

    ( \ 'key).json.pickBranch is a Reads[JsObject] that: - copies the given branch (JsPath + relative JsValue) from the input JS at this given JsPath - creates a JsObject from JsPath and JsValue - returns a JsResult[JsObject]

    ( \ 'key).json.pickBranch is a Reads[JsObject] that: - copies the given branch (JsPath + relative JsValue) from the input JS at this given JsPath - creates a JsObject from JsPath and JsValue - returns a JsResult[JsObject]

    Useful to create/validate an JsObject from a single JsPath (potentially modifying it)

    Example :

    val js = Json.obj("key1" -> "value1", "key2" -> Json.obj( "key21" -> "value2") )
js.validate( (__ \ 'key2).json.pickBranch )
=> JsSuccess({"key2":{"key21":"value2"}},/key2)
  19. def pickBranch[A <: JsValue](reads: Reads[A]): Reads[JsObject]

    ( \ 'key).json.pickBranch[A <: JsValue](readsOfA) is a Reads[JsObject] that: - copies the given branch (JsPath + relative JsValue) from the input JS at this given JsPath - validates this relative JsValue as an object of type A (inheriting JsValue) potentially modifying it - creates a JsObject from JsPath and validated JsValue - returns a JsResult[JsObject]

    ( \ 'key).json.pickBranch[A <: JsValue](readsOfA) is a Reads[JsObject] that: - copies the given branch (JsPath + relative JsValue) from the input JS at this given JsPath - validates this relative JsValue as an object of type A (inheriting JsValue) potentially modifying it - creates a JsObject from JsPath and validated JsValue - returns a JsResult[JsObject]

    Useful to create/validate an JsObject from a single JsPath (potentially modifying it)

    Example :

    val js = Json.obj("key1" -> "value1", "key2" -> Json.obj( "key21" -> "value2") )
js.validate( (__ \ 'key2).json.pickBranch[JsString]( (__ \ 'key21).json.pick[JsString].map( (js: JsString) => JsString(js.value ++ "3456") ) ) )
=> JsSuccess({"key2":"value23456"},/key2/key21)
  20. def prune: Reads[JsObject]

    ( \ 'key).json.prune is Reads[JsObject] that prunes the branch and returns remaining JsValue

    ( \ 'key).json.prune is Reads[JsObject] that prunes the branch and returns remaining JsValue

    Example :

    val js = Json.obj("key1" -> "value1", "key2" -> "value2")
js.validate( (__ \ 'key2).json.prune )
=> JsSuccess({"key1":"value1"},/key2)
  21. def put(a: ⇒ JsValue): Reads[JsObject]

    ( \ 'key).put(fixedValue) is a Reads[JsObject] that: - creates a JsObject setting A (inheriting JsValue) at given JsPath - returns a JsResult[JsObject]

    ( \ 'key).put(fixedValue) is a Reads[JsObject] that: - creates a JsObject setting A (inheriting JsValue) at given JsPath - returns a JsResult[JsObject]

    This Reads doesn't care about the input JS and is mainly used to set a fixed at a given JsPath Please that A is passed by name allowing to use an expression reevaluated at each time.

    Example :

    val js = Json.obj("key1" -> "value1", "key2" -> "value2")
js.validate( (__ \ 'key3).json.put( { JsNumber((new java.util.Date).getTime()) } ) )
=> JsSuccess({"key3":1376419773171},)
  22. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  23. def toString(): String
    Definition Classes
    AnyRef → Any
  24. def update[A <: JsValue](reads: Reads[A]): Reads[JsObject]

    ( \ 'key).json.update(reads) is the most complex Reads[JsObject] but the most powerful: - copies the whole JsValue => A - applies the passed Reads[A] on JsValue => B - deep merges both JsValues (A ++ B) so B overwrites A identical branches

    ( \ 'key).json.update(reads) is the most complex Reads[JsObject] but the most powerful: - copies the whole JsValue => A - applies the passed Reads[A] on JsValue => B - deep merges both JsValues (A ++ B) so B overwrites A identical branches

    Please note that if you have prune a branch in B, it is still in A so you'll see it in the result

    Example :

    val js = Json.obj("key1" -> "value1", "key2" -> "value2")
js.validate(__.json.update((__ \ 'key3).json.put(JsString("value3"))))
=> JsSuccess({"key1":"value1","key2":"value2","key3":"value3"},)
  25. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  26. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  27. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()

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