Symfony2 Twig覆盖默认路径功能 [英] Symfony2 Twig overriding default path function

问题描述

我需要一种方法来覆盖树枝中的基本path()函数.

I need a way to override the basic path() function in twig.

我已经有一个小树枝扩展名，但是在那里定义路径过滤器对我没有帮助.

I have a twig extension already, but defining a path filter there did not do the trick for me.

谢谢.

推荐答案

扩展默认的路由扩展类.

Extend the default routing extension class.

use Symfony\Bridge\Twig\Extension\RoutingExtension;

class MyRoutingExtension extends RoutingExtension
{
    public function getPath($name, $parameters = array(), $relative = false)
    {
        //some code
    }
}

然后使用参数指定班级:

Then specify your class using a parameter:

parameters:
    twig.extension.routing.class: MyNamespace\MyRoutingExtension

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要注入更多的依赖项(例如域)，您基本上需要复制服务定义，然后添加您的内容:

To inject more dependencies such as the domain you basically need to copy the service definition and then add your stuff:

# services.yml
twig.extension.routing:
    class: '%twig.extension.routing.class%'
    public: false
    arguments: 
      - '@router'
      - 'domain'

class MyRoutingExtension extends RoutingExtension
{
    protected $domain;

    public function __construct($router,$domain)
    {
        parent::__construct($router);

        $this->domain = $domain;
    }
}

您还可以从DependencyInjection扩展内部将参数添加到服务定义中.与复制服务定义相比，这可能会更健壮.如果更新symfony，则始终存在定义可能更改的风险.不太可能.我碰巧没有一个方便的例子.

You could also add the argument to the service definition from inside of your DependencyInjection extension. That might be a bit more robust that copying the service definition. There is always the risk that the definition might change if symfony is updated. Unlikely. I don't happen to have an example handy.

顺便说一句，您应该避免将一个问题添加到现有问题中.一些沮丧的选民会持暗淡的看法.

By the way, you should probably avoid adding a question to an existing question. Some of the down voters will take a dim view.

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