..versionadded::2.2

The ``path`` option is new inSymfony2.2, ``pattern`` is used in older

The ``path`` option is new inSymfony 2.2, ``pattern`` is used in older

versions.

The path defined by the ``blog_show`` route acts like ``/blog/*`` where

..versionadded::2.2

The ``methods`` option is added inSymfony2.2. Use the ``_method``

The ``methods`` option is added inSymfony 2.2. Use the ``_method``

requirement in older versions.

Despite the fact that these two routes have identical paths (``/contact``),

You can add routes or other instances of

:class:`Symfony\\Component\\Routing\\RouteCollection` to *another* collection.

This way you can build a tree of routes. Additionally you can define a prefix,

default requirements, default options and host to all routes of a subtree with

the:method:`Symfony\\Component\\Routing\\RouteCollection::addPrefix` method::

This way you can build a tree of routes. Additionally you can define a prefix

and default values for the parameters, requirements, options, schemes and the

host to all routes of a subtree using methods provided by the

``RouteCollection`` class::

..versionadded::2.2

The ``addPrefix`` method is added in Symfony2.2. This was part of the

``addCollection`` method in older versions.

Set the Request Parameters

.. _components-routing-http-foundation: