MonthRule

public class MonthRule : ValidationRule<String>

MonthRule is a subclass of ValidationRule that defines how a credit/debit’s card expiry month field is validated


                    
                    
                    init(message:)

Initializes MonthRule object with error message. Used to validate a month represented as number.

Swift

public override init(message: String = "not a valid month. must be 01 to 12.")


                                message

String of error message.

An initialized MonthRule object.


                    
                    
                    validate(_:)

Validates a field.

Swift

public override func validate(_ value: String?) -> String?


                                value

String to check for validation.

Error Message. nil on successful validation, otherwise String on failed Validation.