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copied!<p>What you probably need is the <code>include</code> tag which includes another template.</p> <pre><code>{% include 'FooBundle::partial.html.twig' %} </code></pre> <p>Template inclusion is for simple cases, where you just need things like partials.</p> <p>The <code>render</code> tag is for invoking controllers, doing more complex things, or if your template can't access the variables needed to display easily. Doing that the kernel creates a new request as if it came as a standalone request. In fact using ESI it could be a standalone request to that controller.<a href="http://symfony.com/doc/current/book/http_cache.html#using-esi-in-symfony2" rel="nofollow" title="Using ESI in symfony2">See here for details</a>. Because of that, you can't get the main request object, there is probably no main request object because you use ESI or because you create a route for that controller and invoke it via AJAX or whatever. Relying on the the information that your controller is invoked via a sub-request is not supported by the framework as I know, and I think it's intentional. You have to pass all information in query parameters.</p> <p>Your example isn't correct, it would be like this:</p> <pre><code>{% render 'FooBundle:MyController:actionName' ... %} </code></pre> <p>You have to have a <code>FooBundle\Controller\MyControllerController</code> class like this for tihs to work.</p> <pre><code>namespace FooBundle\Controller; use Symfony\Bundle\FrameworkBundle\Controller\Controller; class MyControllerController extends Controller { public function actionNameAction() { ... } } </code></pre>

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