Uuid

==

..versionadded::2.5

The Uuid constraint wasadded in Symfony 2.5.

The Uuid constraint wasintroduced in Symfony 2.5.

Validates that a value is a valid `Universally unique identifier (UUID)`_ per `RFC 4122`_.

By default, this will validate the format according to the RFC's guidelines, but this can

**type**: ``boolean`` **default**: ``true``

If this option is set to ``true`` the constraint will check if the UUID is formatted per the

RFC's input format rules: ``216fff40-98d9-11e3-a5e2-0800200c9a66``.Setting this to ``false``

will allow alternate input formats like::

RFC's input format rules: ``216fff40-98d9-11e3-a5e2-0800200c9a66``. Setting this to ``false``

will allow alternate input formats like:

versions

.. _`Universally unique identifier (UUID)`:http://en.wikipedia.org/wiki/Universally_unique_identifier

.. _`RFC 4122`:http://tools.ietf.org/html/rfc4122

.. _`UUID versions`:http://en.wikipedia.org/wiki/Universally_unique_identifier#Variants_and_versions