Symfony 3.4嵌入控制器模板失效问题求助

Let’s walk through why your ESI controller embed might be failing, how it differs from Symfony’s documented examples, and how to fix it.

Key Differences from Symfony’s Documentation #

First, let’s break down the critical gaps between your setup and what Symfony 3.4’s docs recommend:

1. ESI Requires a Public Route (Your Working Example Likely Doesn’t Use ESI) #

Symfony’s docs explicitly state that render_esi relies on HTTP requests to your controller, which means the target controller must have a publicly accessible route.

Your working scenario (where you pass an object to the embedded controller) almost certainly uses the regular render() function, not render_esi. Unlike ESI, render() calls the controller method directly without an HTTP request—so it doesn’t need a route, and can accept complex parameters like objects. This is the biggest difference between your two scenarios.

2. ESI Only Supports Scalar Parameters #

ESI works by passing parameters as HTTP query string values, which means you can’t pass nested arrays or objects (they can’t be serialized to HTTP parameters). Your current code passes a nested array {'filter': {'year': 'desc'}}—this won’t work with ESI, whereas it would work fine with regular render().

3. ESI Must Be Enabled in Configuration #

Symfony doesn’t enable ESI by default. If your config doesn’t explicitly turn it on, render_esi will silently fall back to regular render() (but with potential caching issues that break output).

Step-by-Step Fixes #

Let’s address each issue one by one:

1. Enable ESI in Your Config #

Open app/config/config.yml and ensure ESI is enabled:

framework:
    http_cache:
        esi: true

You’ll also need to run your app with a cache proxy that supports ESI. For local testing, use Symfony’s built-in HttpCache:

php bin/console server:run --enable-http-cache

2. Add a Public Route to Your Target Controller #

In your DoctrineBehaviorsBundle, create or update Resources/config/routing.yml to add a route for the statistic action:

doctrine_behaviors_comment_statistic:
    path: /comment/statistic
    defaults: { _controller: DoctrineBehaviorsBundle:Comment:statistic }
    methods: [GET]

Test this route directly in your browser to confirm it returns the table (this ensures the controller itself works before adding ESI).

3. Simplify Parameters to Scalars #

Rewrite your Twig code to pass scalar values instead of nested arrays:

{{ render_esi(controller('DoctrineBehaviorsBundle:Comment:statistic', {'filterYear': 'desc'})) }}

Update your controller to accept the scalar parameter:

public function statisticAction($filterYear = 'desc') {
    $filter = ['year' => $filterYear];
    list($func, $stats) = $this->getDoctrine()->getRepository(CommentRecord::class)->fetchStatistics($filter);
    
    $response = $this->render('@DoctrineBehaviors/comment/statistic.html.twig', [
        'func' => $func,
        'stats' => $stats,
    ]);
    $response->setSharedMaxAge(600);
    return $response;
}

4. Test with Regular render() First #

To isolate the issue, temporarily replace render_esi with render:

{{ render(controller('DoctrineBehaviorsBundle:Comment:statistic', {'filter': {'year': 'desc'}})) }}

If this works, the problem is specifically related to ESI configuration/routing, not the controller or template itself.

5. Clear Caches #

ESI relies heavily on caching—clear both Symfony’s cache and any reverse proxy cache:

php bin/console cache:clear

内容的提问来源于stack exchange，提问作者Stoads