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How to match a route based on the Host

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How to match a route based on the Host¶

New in version 2.2: Host matching support was added in Symfony 2.2

You can also match on the HTTP host of the incoming request.

YAML

mobile_homepage:
    path:     /
    host:     m.example.com
    defaults: { _controller: AcmeDemoBundle:Main:mobileHomepage }

homepage:
    path:     /
    defaults: { _controller: AcmeDemoBundle:Main:homepage }

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="mobile_homepage" path="/" host="m.example.com">
        <default key="_controller">AcmeDemoBundle:Main:mobileHomepage</default>
    </route>

    <route id="homepage" path="/">
        <default key="_controller">AcmeDemoBundle:Main:homepage</default>
    </route>
</routes>

PHP

use Symfony\Component\Routing\RouteCollection;
use Symfony\Component\Routing\Route;

$collection = new RouteCollection();
$collection->add('mobile_homepage', new Route('/', array(
    '_controller' => 'AcmeDemoBundle:Main:mobileHomepage',
), array(), array(), 'm.example.com'));

$collection->add('homepage', new Route('/', array(
    '_controller' => 'AcmeDemoBundle:Main:homepage',
)));

return $collection;

Both routes match the same path /, however the first one will match only if the host is m.example.com.

Using Placeholders¶

The host option uses the same syntax as the path matching system. This means you can use placeholders in your hostname:

YAML

projects_homepage:
    path:     /
    host:     "{project_name}.example.com"
    defaults: { _controller: AcmeDemoBundle:Main:mobileHomepage }

homepage:
    path:     /
    defaults: { _controller: AcmeDemoBundle:Main:homepage }

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="projects_homepage" path="/" host="{project_name}.example.com">
        <default key="_controller">AcmeDemoBundle:Main:mobileHomepage</default>
    </route>

    <route id="homepage" path="/">
        <default key="_controller">AcmeDemoBundle:Main:homepage</default>
    </route>
</routes>

PHP

use Symfony\Component\Routing\RouteCollection;
use Symfony\Component\Routing\Route;

$collection = new RouteCollection();
$collection->add('project_homepage', new Route('/', array(
    '_controller' => 'AcmeDemoBundle:Main:mobileHomepage',
), array(), array(), '{project_name}.example.com'));

$collection->add('homepage', new Route('/', array(
    '_controller' => 'AcmeDemoBundle:Main:homepage',
)));

return $collection;

You can also set requirements and default options for these placeholders. For instance, if you want to match both m.example.com and mobile.example.com, you use this:

YAML

mobile_homepage:
    path:     /
    host:     "{subdomain}.example.com"
    defaults:
        _controller: AcmeDemoBundle:Main:mobileHomepage
        subdomain: m
    requirements:
        subdomain: m|mobile

homepage:
    path:     /
    defaults: { _controller: AcmeDemoBundle:Main:homepage }

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="mobile_homepage" path="/" host="{subdomain}.example.com">
        <default key="_controller">AcmeDemoBundle:Main:mobileHomepage</default>
        <default key="subdomain">m</default>

        <requirement key="subdomain">m|mobile</requirement>
    </route>

    <route id="homepage" path="/">
        <default key="_controller">AcmeDemoBundle:Main:homepage</default>
    </route>
</routes>

PHP

use Symfony\Component\Routing\RouteCollection;
use Symfony\Component\Routing\Route;

$collection = new RouteCollection();
$collection->add('mobile_homepage', new Route('/', array(
    '_controller' => 'AcmeDemoBundle:Main:mobileHomepage',
    'subdomain'   => 'm',
), array(
    'subdomain' => 'm|mobile',
), array(), '{subdomain}.example.com'));

$collection->add('homepage', new Route('/', array(
    '_controller' => 'AcmeDemoBundle:Main:homepage',
)));

return $collection;

Tip

Make sure you also include a default option for the subdomain placeholder, otherwise you need to include the subdomains value each time you generate the route.

You can also use service parameters if you do not want to hardcode the hostname:

YAML

mobile_homepage:
    path:     /
    host:     "m.{domain}"
    defaults: { _controller: AcmeDemoBundle:Main:mobileHomepage }
    requirements:
        domain: "%domain%"

homepage:
    path:  /
    defaults: { _controller: AcmeDemoBundle:Main:homepage }

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="mobile_homepage" path="/" host="m.example.com">
        <default key="_controller">AcmeDemoBundle:Main:mobileHomepage</default>
        <requirement key="domain">%domain%</requirement>
    </route>

    <route id="homepage" path="/">
        <default key="_controller">AcmeDemoBundle:Main:homepage</default>
    </route>
</routes>

PHP

use Symfony\Component\Routing\RouteCollection;
use Symfony\Component\Routing\Route;

$collection = new RouteCollection();
$collection->add('mobile_homepage', new Route('/', array(
    '_controller' => 'AcmeDemoBundle:Main:mobileHomepage',
), array(
    'domain' => '%domain%',
), array(), 'm.{domain}'));

$collection->add('homepage', new Route('/', array(
    '_controller' => 'AcmeDemoBundle:Main:homepage',
)));

return $collection;

Using Host Matching of Imported Routes¶

You can also set the host option on imported routes:

YAML

# app/config/routing.yml
acme_hello:
    resource: "@AcmeHelloBundle/Resources/config/routing.yml"
    host:     "hello.example.com"

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">

    <import resource="@AcmeHelloBundle/Resources/config/routing.xml" host="hello.example.com" />
</routes>

PHP

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

$collection = new RouteCollection();
$collection->addCollection($loader->import("@AcmeHelloBundle/Resources/config/routing.php"), '', array(), array(), array(), 'hello.example.com');

return $collection;

The host hello.example.com will be set on each route loaded from the new routing resource.

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