phone method
Checks if the value is a phone number
message
is the message to return if the validation fails
Implementation
EzValidator<T> phone([String? message]) => addValidation((v, [_]) {
if (v is String) {
return phoneRegExp.hasMatch(v)
? null
: message ?? EzValidator.globalLocale.phoneNumber(v, label);
}
return 'Invalid type for phone validation';
});