Where has the Twig function 'render' in templates gone?

Question

I have just updated my dependencies for my Silex application and now suddenly one of my templates is failing with the error:

Twig_Error_Syntax: The function "render" does not exist.

This was working fine before I performed a composer update. From the composer output the following have been updated:

- Removing symfony/options-resolver (v2.6.7)
- Installing symfony/options-resolver (v2.7.0)
  Downloading: 100%

- Removing symfony/intl (v2.6.7)
- Installing symfony/intl (v2.7.0)
  Downloading: 100%

- Removing symfony/form (v2.6.7)
- Installing symfony/form (v2.7.0)
  Downloading: 100%

- Removing symfony/translation (v2.6.7)
- Installing symfony/translation (v2.7.0)
  Downloading: 100%

- Removing symfony/validator (v2.6.7)
- Installing symfony/validator (v2.7.0)
  Downloading: 100%

- Removing symfony/security (v2.6.7)
- Installing symfony/security (v2.7.0)
  Downloading: 100%

- Removing symfony/finder (v2.6.7)
- Installing symfony/finder (v2.7.0)
  Downloading: 100%

- Removing symfony/process (v2.6.7)
- Installing symfony/process (v2.7.0)
  Downloading: 100%

- Removing symfony/twig-bridge (v2.6.7)
- Installing symfony/twig-bridge (v2.7.0)
  Downloading: 100%

- Removing symfony/web-profiler-bundle (v2.6.7)
- Installing symfony/web-profiler-bundle (v2.7.0)
  Downloading: 100%

- Removing symfony/stopwatch (v2.6.7)
- Installing symfony/stopwatch (v2.7.0)
  Downloading: 100%

The code that was working within my template is:

{{ render (url('navigation')) | raw }}

I cannot find anything that suggests this function has been deprecated or what it has been replaced with. I am not sure which of the updates has caused this problem, but i suspect it is Twig-Bridge. I am using Twig version 1.18.1.

I am a bit stuck as to what the issue is here and it is causing me some problems so any help would be great.

I acknowlegde the fact that I should have pegged the version of the packages I am using so I can test upgrades in a more methodical manner.

Thanks, Russell

Update 1:

An update to provide some more context.

composer.json

"require": {
    "silex/silex": "~1.2",
    "silex/web-profiler": "1.0.*@dev",

    "ruflin/elastica": "1.3.*@dev",
    "dflydev/doctrine-orm-service-provider": "1.0.*@dev",

    "monolog/monolog": "1.9.1",

    "twig/twig": "1.18.*@dev",
    "twig/extensions": "1.2.*@dev",

    "symfony/yaml": "~2.4",
    "symfony/console": "~2.4",
    "symfony/twig-bridge": "~2.4",
    "symfony/config": "~2.4",
    "symfony/monolog-bridge": "~2.4",
    "symfony/serializer": "~2.4",
    "symfony/form": "~2.4",
    "symfony/validator": "~2.4",
    "symfony/translation": "~2.4",
    "symfony/security": "~2.4",

    "macedigital/silex-jms-serializer": "1.0.0",
    "jdesrosiers/silex-jms-serializer-provider": "~0.1",

    "mheap/silex-gravatar": "dev-master",
    "mheap/gravatar-php": "dev-master",
    "mheap/silex-assetic": "1.0.4",

    "knplabs/knp-menu": "2.0.*@dev",

    "predis/service-provider": "dev-master",

    "pear/archive_tar": "dev-master",
    "pear/pear_exception": "1.0.*@dev",
    "wapmorgan/unified-archive": "dev-master",

    "sybio/image-workshop": "dev-master",
    "sybio/gif-frame-extractor": "dev-master",
    "sybio/gif-creator": "dev-master",

    "paypal/rest-api-sdk-php" : "*",

    "kilte/silex-pagination": "1.1.*@dev",

    "thispagecannotbefound/silex-markdown-parser": "dev-master",

    "erusev/parsedown": "~1.4",
    "erusev/parsedown-extra": "dev-master"
 }

I register the Twig and UrlGenerator services using the following:

$app->register ( new \Silex\Provider\UrlGeneratorServiceProvider () );
$app -> register (new \Silex\Provider\TwigServiceProvider(), array(
        'twig.options' => array("debug" => true)
    ));

$app['twig'] = $app -> share($app -> extend('twig', function($twig, $app) {
        $twig -> addExtension(new \Twig_Extension_Debug());
        return $twig;
    }));

Twig itself is still working and any template that does not have '{{ render }}' in it will work without issue.

Szyku · Accepted Answer · 2015-06-09T08:52:56.910

4

I had the same problem. Did you register HttpFragmentServiceProvider before registering the Web Profiler? It is not obvious, but the documentation mentions about it here. It worked nicely for me.

Regards

edited Jun 09 '15 at 08:52

answered Jun 09 '15 at 08:43

Szyku

56
3

awesome! same error and after adding `$app->register(new HttpFragmentServiceProvider());` error was gone! – Kevin Jun 13 '15 at 15:37
Perfect, this was the fix. Thanks. – Russell Seymour Jun 13 '15 at 16:15

score 0 · Answer 2 · edited Jun 05 '15 at 23:02

0

Make sure you have:

twig/twig (Maybe you have deleted it before performing composer update) and symfony/twig-bridge installed via composer.
and

Register TwigServiceProvider() and UrlGeneratorServiceProvider()

$app->register(new Silex\Provider\TwigServiceProvider(), array(  
  'twig.path' => \__DIR__.'/path/to/templates/',  
));

$app->register(new UrlGeneratorServiceProvider());

edited Jun 05 '15 at 23:02

Med

2,035
20
31

answered Jun 05 '15 at 13:23

doncredas

161
7

1

Thanks for this. I do still have ```twig/twig``` and ```symfony/twig-bridge``` in my composer.json file. The two services are registered. I will update my original question with these bits. – Russell Seymour Jun 05 '15 at 14:05

Where has the Twig function 'render' in templates gone?

2 Answers2