ChoiceConstraint

public struct ChoiceConstraint : Constraint

A constraint to validate if a value exists in predefined choices.

  • A default error message to show if no custom error message is provided.

    Declaration

    Swift

    public static let message: String

  • A list of choices.

    Declaration

    Swift

    public let choices: [any Encodable & Equatable]

  • A custom error message.

    Declaration

    Swift

    public let message: String

  • See Constraint.

    Declaration

    Swift

    public let groups: Set<Group>

  • A validator named ChoiceValidator to validate a value.

    Declaration

    Swift

    public let validator: ConstraintValidator

  • Initializes a new instance with a list of choices, a custom error message and a set of Groups to group by.

    Declaration

    Swift

    public init(
    _ choices: [any Encodable & Equatable] = .init(),
    message: String = message,
    groups: Set<Group> = .init()
)

    Parameters

    choices

    A list of choices. Defaults to an empty array.
    message

    A custom error message. Defaults to the default error message.
    groups

    A set of Groups to group by. Defaults to an empty set.