Twig渲染函数中的Symfony2内部路由

问题描述

我的layout.html.twig:

{{ render(controller('AcmeDemoBundle:Page:mainmenu')) }}

Page 控制器从 Doctrine 中检索所有页面，并使用一组页面呈现 mainmenu.html.twig.

The Page controller retrieves all pages from the Doctrine and renders mainmenu.html.twig with a set of pages.

我的mainmenu.html.twig:

{% if menu_pages is defined %}
    {% for page in menu_pages %}
        <li class="{% if app.request.attributes.get("_internal') == '_page_show' and app.request.get('id') == page.id %}active{% endif %}"><a href="{{ path('_page_show', {id: page.id}) }}">{{ page.title|e }}</a></li>
    {% endfor %}
{% endif %}

但是没有显示 active 类.据我了解，问题出在内部路由上.如何解决?

But no active class is displayed. As far as I understand the problem is in internal routing. How to fix that?

推荐答案

最好不要使用 {{ render(controller('AcmeDemoBundle:Page:mainmenu')) }}.当您改用服务时，它的工作速度会更快、更舒适.您可以创建一个服务，该服务将在包含它们的任何页面上显示菜单.在服务中，您可以轻松访问当前 _route 以添加 active 类.

Better do not use {{ render(controller('AcmeDemoBundle:Page:mainmenu')) }}. It work more fast and comfortable when you use services instead. You can create a service which will show menu on any page where you include them. And in service you can easy get access to current _route for add active class.

但是如果你真的需要使用{{render(controller('AcmeDemoBundle:Page:mainmenu'))}}，那么你需要向他们传递一个当前的请求，比如:

But if you really need to use {{ render(controller('AcmeDemoBundle:Page:mainmenu')) }}, so you need pass to them a current request like:

{{ render(controller('AcmeDemoBundle:Page:mainmenu', {'request': app.request})) }}

然后在行动中将请求传递给树枝:

and then in action pass request to twig:

public function mainmenuAction($request) {

    return $this->render('AcmeDemoBundle:Page:mainmenu.html.twig', array('request' => $request));
}

并在树枝中使用此请求:

and in twig use this request:

{% if menu_pages is defined %}
    {% for page in menu_pages %}
        <li class="{% if request.get("_route') == '_page_show' and request.get('id') == page.id %}active{% endif %}"><a href="{{ path('_page_show', {id: page.id}) }}">{{ page.title|e }}</a></li>
    {% endfor %}
{% endif %}

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