Dumplie\Metadata\Schema\Field\DateTimeField::serialize PHP Method

serialize() public method

public serialize ( $value ) : string
$value
return string
    public function serialize($value) : string
    {
        if (!$value instanceof \DateTimeInterface) {
            throw InvalidValueException::valueDoesNotMatchType($this, $value);
        }
        return (string) $value->format($this->format);
    }