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5. 如何通过条件来限制路由匹配

如何通过条件来限制路由匹配

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contact:
    path:     /contact
    defaults: { _controller: AcmeDemoBundle:Main:contact }
    condition: "context.getMethod() in ['GET', 'HEAD'] and request.headers.get('User-Agent') matches '/firefox/i'"

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<?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="contact" path="/contact">
        <default key="_controller">AcmeDemoBundle:Main:contact</default>
        <condition>context.getMethod() in ['GET', 'HEAD'] and request.headers.get('User-Agent') matches '/firefox/i'</condition>
    </route>
</routes>

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use Symfony\Component\Routing\RouteCollection;
use Symfony\Component\Routing\Route;
 
$collection = new RouteCollection();
$collection->add('contact', new Route(
    '/contact', array(
        '_controller' => 'AcmeDemoBundle:Main:contact',
    ),
    array(),
    array(),
    '',
    array(),
    array(),
    'context.getMethod() in ["GET", "HEAD"] and request.headers.get("User-Agent") matches "/firefox/i"'
));
 
return $collection;

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if (rtrim($pathinfo, '/contact') === '' && (
    in_array($context->getMethod(), array(0 => "GET", 1 => "HEAD"))
    && preg_match("/firefox/i", $request->headers->get("User-Agent"))
)) {
    // ...
}

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