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How to Pass Extra Information from a Route to a Controller

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How to Pass Extra Information from a Route to a Controller¶

Parameters inside the defaults collection don't necessarily have to match a placeholder in the route path. In fact, you can use the defaults array to specify extra parameters that will then be accessible as arguments to your controller:

YAML

# app/config/routing.yml
blog:
    path:      /blog/{page}
    defaults:
        _controller: AppBundle:Blog:index
        page:        1
        title:       "Hello world!"

XML

<!-- app/config/routing.xml -->
<?xml version="1.0" encoding="UTF-8" ?>
<routes xmlns="http://symfony.com/schema/routing"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://symfony.com/schema/routing
        http://symfony.com/schema/routing/routing-1.0.xsd">

    <route id="blog" path="/blog/{page}">
        <default key="_controller">AppBundle:Blog:index</default>
        <default key="page">1</default>
        <default key="title">Hello world!</default>
    </route>
</routes>

PHP

// app/config/routing.php
use Symfony\Component\Routing\RouteCollection;
use Symfony\Component\Routing\Route;

$collection = new RouteCollection();
$collection->add('blog', new Route('/blog/{page}', array(
    '_controller' => 'AppBundle:Blog:index',
    'page'        => 1,
    'title'       => 'Hello world!',
)));

return $collection;

Now, you can access this extra parameter in your controller:

public function indexAction($page, $title)
{
    // ...
}

As you can see, the $title variable was never defined inside the route path, but you can still access its value from inside your controller.

This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.