Writes

Serializer for BigDecimal types.

Serializer for BigInt type.

Serializer for BigInteger type.

Serializer for Boolean types.

Serializer for Byte types.

Serializer for Double types.

Serializer for Float types.

Serializer for Int types.

Serializer for Long types.

Serializer for Short types.

Serializer for String types.

Typeclass to implement way of formatting of Java8 temporal types.

Formatting companion

Serializer for java.util.UUID

Returns an instance which uses f as Writes.writes function.

Transforms the resulting JsValue using the given function, which is also applied with the initial input. def transform(transformer: (A, JsValue) => JsValue): Writes[A] = Writes[A] { a => transformer(a, this.writes(a)) }

Serializer for java.util.Date

writes a optional field in given JsPath : if None, doesn't write field at all. Please note we do not write "null" but simply omit the field when None If you want to write a "null", use ConstraintWrites.optionWithNull[A]

Pure Option Writer[T] which writes "null" when None which is different from JsPath.writeNullable which omits the field when None

Serializer for Java8 temporal types (e.g. java.time.LocalDateTime) to be written as JSON string.

Serializer for Iterable types.

Deprecated due to incompatibility with non _[_] shapes, #368.

Serializer for java.sql.Date

Serializer for java.time.Instant as JSON number. The number of milliseconds since epoch is used.

import java.time.Instant
import play.api.libs.json.Writes

implicit val inWrites: Writes[Instant] = Writes.InstantEpochMilliWrites

Serializer for java.time.LocalDate as JSON number. The number of milliseconds since epoch is used.

import java.time.LocalDate
import play.api.libs.json.Writes

implicit val ldnWrites: Writes[LocalDate] =
 Writes.LocalDateEpochMilliWrites

Serializer for java.time.LocalDateTime as JSON number. The number of milliseconds since epoch is used.

import java.time.LocalDateTime
import play.api.libs.json.Writes

implicit val ldtnWrites = Writes.LocalDateTimeEpochMilliWrites

Serializer for java.time.LocalTime as JSON number. The nano of day is written.

import java.time.LocalTime
import play.api.libs.json.Writes

implicit val ltnWrites = Writes.LocalTimeNanoOfDayWrites

Serializer for java.time.ZonedDateTime as JSON number. The number of milliseconds since epoch is used.

import java.time.ZonedDateTime
import play.api.libs.json.Writes

implicit val zdtnWrites = Writes.ZonedDateTimeEpochMilliWrites

Serializer of Java Duration as a number of milliseconds.

Serializer for a Locale using a object representation

Serializer for scala.Enumeration by name.

The default typeclass to write a java.time.Instant, using '2011-12-03T10:15:30Z' format.

The default typeclass to write a java.time.LocalDateTime, using '2011-12-03T10:15:30' format.

The default typeclass to write a java.time.LocalDate, using '2011-12-03' format.

The default typeclass to write a java.time.LocalTime, using '10:15:30' format.

The default typeclass to write a java.time.OffsetDateTime, using '2011-12-03T10:15:30+02:00' format.

The default typeclass to write a java.time.ZonedDateTime, using '2011-12-03T10:15:30+01:00[Europe/Paris]' format.

Serializer for JsNull.

import play.api.libs.json.Json

Json.obj("foo" -> None)
// equivalent to Json.obj("foo" -> JsNull)

Serializer for Option.

Serializer for java.time.ZoneId as JSON string.

Serializer for Array[T] types.

Default Serializer java.util.Date -> JsNumber(d.getTime (nb of ms))

Serializer for Map[String,V] types.

Serializer for Iterable types.

Serializer of Java Duration using ISO representation (e.g. PT1S for 1 second).

Serializer of Java Period using ISO representation (e.g. P2D for 2 days).

Serializer for JsValues.

Serializer for Jackson JsonNode

Serializer for a Locale using the IETF BCP 47 string representation

Serializer for scala.collection.immutable.Range (aka specialized Seq of Int).

If Some is directly used (not as Option).

import play.api.libs.json.{ Json, Writes }

def foo[T: Writes](writeableValue: T) =
 Json.obj("foo" -> Some(writeableValue))
 // equivalent to Json.obj("foo" -> writeableValue)

Serializer for any type that is provided an implicit conversion to String (e.g. tagged types).

Serializer for java.net.URI

Serializer for Map[String,V] types.