play.api.data

Mapping

trait Mapping[T] extends AnyRef

A mapping is a two-way binder to handle a form field.

Self Type
Mapping[T]
Source
Form.scala
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Abstract Value Members

  1. abstract def bind(data: Map[String, String]): Either[Seq[FormError], T]

    Binds this field, i.e.

    Binds this field, i.e. construct a concrete value from submitted data.

    data

    the submitted data

    returns

    either a concrete value of type T or a set of errors, if the binding failed

  2. abstract val constraints: Seq[Constraint[T]]

    The constraints associated with this field.

  3. abstract val key: String

    The field key.

  4. abstract val mappings: Seq[Mapping[_]]

    Sub-mappings (these can be seen as sub-keys).

  5. abstract def unbind(value: T): Map[String, String]

    Unbinds this field, i.e.

    Unbinds this field, i.e. transforms a concrete value to plain data.

    value

    the value to unbind

    returns

    the plain data

  6. abstract def unbindAndValidate(value: T): (Map[String, String], Seq[FormError])

    Unbinds this field, i.e.

    Unbinds this field, i.e. transforms a concrete value to plain data, and applies validation.

    value

    the value to unbind

    returns

    the plain data and any errors in the plain data

  7. abstract def verifying(constraints: Constraint[T]*): Mapping[T]

    Constructs a new Mapping based on this one, by adding new constraints.

    Constructs a new Mapping based on this one, by adding new constraints.

    For example:

    import play.api.data._
    import validation.Constraints._
    
    Form("phonenumber" -> text.verifying(required) )
    constraints

    the constraints to add

    returns

    the new mapping

  8. abstract def withPrefix(prefix: String): Mapping[T]

    Constructs a new Mapping based on this one, adding a prefix to the key.

    Constructs a new Mapping based on this one, adding a prefix to the key.

    prefix

    the prefix to add to the key

    returns

    the same mapping, with only the key changed

Concrete Value Members

  1. final def !=(arg0: Any): Boolean

    Definition Classes
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  2. final def ##(): Int

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

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  4. def addPrefix(prefix: String): Option[String]

    Attributes
    protected
  5. def applyConstraints(t: T): Either[Seq[FormError], T]

    Attributes
    protected
  6. final def asInstanceOf[T0]: T0

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  7. def clone(): AnyRef

    Attributes
    protected[java.lang]
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    Annotations
    @throws( ... )
  8. def collectErrors(t: T): Seq[FormError]

    Attributes
    protected
  9. final def eq(arg0: AnyRef): Boolean

    Definition Classes
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  10. def equals(arg0: Any): Boolean

    Definition Classes
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  11. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
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    Annotations
    @throws( classOf[java.lang.Throwable] )
  12. val format: Option[(String, Seq[Any])]

    The Format expected for this field, if it exists.

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

    Definition Classes
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  14. def hashCode(): Int

    Definition Classes
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  15. final def isInstanceOf[T0]: Boolean

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

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  17. final def notify(): Unit

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  18. final def notifyAll(): Unit

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

    Definition Classes
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  20. def toString(): String

    Definition Classes
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  21. def transform[B](f1: (T) ⇒ B, f2: (B) ⇒ T): Mapping[B]

    Transform this Mapping[T] to a Mapping[B].

    Transform this Mapping[T] to a Mapping[B].

    B

    The type of the new mapping.

    f1

    Transform value of T to a value of B

    f2

    Transform value of B to a value of T

  22. def verifying(error: ⇒ String, constraint: (T) ⇒ Boolean): Mapping[T]

    Constructs a new Mapping based on this one, by adding a new ad-hoc constraint.

    Constructs a new Mapping based on this one, by adding a new ad-hoc constraint.

    For example:

    import play.api.data._
    import validation.Constraints._
    
    Form("phonenumber" -> text.verifying("Bad phone number", {_.grouped(2).size == 5}))
    error

    The error message used if the constraint fails

    constraint

    a function describing the constraint that returns false on failure

    returns

    the new mapping

  23. def verifying(constraint: (T) ⇒ Boolean): Mapping[T]

    Constructs a new Mapping based on this one, by adding a new ad-hoc constraint.

    Constructs a new Mapping based on this one, by adding a new ad-hoc constraint.

    For example:

    import play.api.data._
    import validation.Constraints._
    
    Form("phonenumber" -> text.verifying {_.grouped(2).size == 5})
    constraint

    a function describing the constraint that returns false on failure

    returns

    the new mapping

  24. final def wait(): Unit

    Definition Classes
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    Annotations
    @throws( ... )
  25. final def wait(arg0: Long, arg1: Int): Unit

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    @throws( ... )
  26. final def wait(arg0: Long): Unit

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    @throws( ... )

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