In this case we’ve mapped the URL to the list action of the ProductController. Omit the action definition to map to the default action of the controller:

An alternative syntax is to assign the controller and action to use within a block passed to the method:

If you have mappings that all fall under a particular path you can group mappings with the group method:

}

You can also create nested url mappings:

Rewriting specific URIs is often useful when integrating with other frameworks.