public function __construct($basketId)
{
$this->basketId = (string) $basketId;
}
public static function fromString($string)
{
return new BasketId($string);
}
public function __toString()
{
return $this->basketId;
}
public function equals(IdentifiesAggregate $other)
{
return $other instanceof BasketId && $this->basketId == $other->basketId;
}
// A nice convention is to have a static generate() method to create a random BasketId. The example here is a bad
// way to generate a UUID, so don't do this in production. Use something like https://github.com/ramsey/uuid
public static function generate()
{
$badSampleUuid = md5(uniqid());
return new BasketId($badSampleUuid);
}
}
// Sample usage:
$basketId = BasketId::fromString('12345678-90ab-cdef-1234-567890abcedf1234');
// Casting to string gives you the original string back:
it("should cast to string", (string) $basketId == '12345678-90ab-cdef-1234-567890abcedf1234');
// Testing equality:
it("should equal instances with the same type and value", (new BasketId('same'))->equals(new BasketId('same')));
it("should not equal instances with a different value", !(new BasketId('other'))->equals(new BasketId('same')));
