.. _upgrading.2-to-3:

==============
Version 2 to 3
==============

While we have made significant internal changes to the library, we have made
every effort to ensure a seamless upgrade path from the 2.x series of this
library to 3.x.

One major breaking change is the transition from the ``Rhumsaa`` root namespace
to ``Ramsey``. In most cases, all you will need is to change the namespace to
``Ramsey`` in your code, and everything will "just work."

.. note::
    For more details on the namespace change, including reasons for the change,
    read the blog post "`Introducing ramsey/uuid
    <https://benramsey.com/blog/2016/04/ramsey-uuid/>`_".

Here are full details on the breaking changes to the public API of this library:

1. All namespace references of ``Rhumsaa`` have changed to ``Ramsey``. Simply
   change the namespace to ``Ramsey`` in your code and everything should work.
2. The console application has moved to
   `ramsey/uuid-console <https://packagist.org/packages/ramsey/uuid-console>`_.
   If using the console functionality, use Composer to require
   ``ramsey/uuid-console``.
3. The Doctrine field type mapping has moved to
   `ramsey/uuid-doctrine <https://packagist.org/packages/ramsey/uuid-doctrine>`_.
   If using the Doctrine functionality, use Composer to require
   ``ramsey/uuid-doctrine``.