validation

Contains the validation API used by Form.

For example, to define a custom constraint:

val negative = Constraint[Int] {
case i if i < 0 => Valid
case _ => Invalid("Must be a negative number.")
}

Linear Supertypes

AnyRef, Any

case class Constraint[-T](name: Option[String], args: Seq[Any])(f: (T) ⇒ ValidationResult) extends Product with Serializable

A form constraint.
trait Constraints extends AnyRef

Defines a set of built-in constraints.
case class Invalid(errors: Seq[ValidationError]) extends ValidationResult with Product with Serializable

Validation was a failure.
case class ValidationError(message: String, args: Any*) extends Product with Serializable

A validation error.
sealed trait ValidationResult extends AnyRef

A validation result.

object Constraint extends Serializable

This object provides helpers for creating Constraint values.
object Constraints extends Constraints

Defines a set of built-in constraints.
object Invalid extends Serializable

This object provides helper methods to construct Invalid values.
object ParameterValidator
object Valid extends ValidationResult with Product with Serializable

Validation was a success.