play.api.data.validation

Constraint

Related Docs: class Constraint | package validation

object Constraint extends Serializable

This object provides helpers for creating Constraint values.

For example:

val negative = Constraint[Int] {
  case i if i < 0 => Valid
  case _ => Invalid("Must be a negative number.")
}
Source
Validation.scala
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  1. final def !=(arg0: Any): Boolean

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  2. final def ##(): Int

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  3. final def ==(arg0: Any): Boolean

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  4. def apply[T](name: String, args: Any*)(f: (T) ⇒ ValidationResult): Constraint[T]

    Creates a new named constraint from a validation function.

    Creates a new named constraint from a validation function.

    name

    the constraint name

    args

    the constraint arguments, used to format the constraint name

    f

    the validation function

    returns

    a constraint

  5. def apply[T](f: (T) ⇒ ValidationResult): Constraint[T]

    Creates a new anonymous constraint from a validation function.

    Creates a new anonymous constraint from a validation function.

    f

    the validation function

    returns

    a constraint

  6. final def asInstanceOf[T0]: T0

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  7. def clone(): AnyRef

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  8. final def eq(arg0: AnyRef): Boolean

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  9. def equals(arg0: Any): Boolean

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  10. def finalize(): Unit

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  11. final def getClass(): Class[_]

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  12. def hashCode(): Int

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  13. final def isInstanceOf[T0]: Boolean

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  14. final def ne(arg0: AnyRef): Boolean

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  15. final def notify(): Unit

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  16. final def notifyAll(): Unit

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  17. final def synchronized[T0](arg0: ⇒ T0): T0

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  18. def toString(): String

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  19. final def wait(): Unit

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  20. final def wait(arg0: Long, arg1: Int): Unit

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  21. final def wait(arg0: Long): Unit

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