How to Dump Debug Information in Twig Templates
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How to Dump Debug Information in Twig Templates
When using PHP, you can use the dump() function from the VarDumper component if you need to quickly find the value of a variable passed. This is useful, for example, inside your controller:
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// src/AppBundle/Controller/ArticleController.php
namespace AppBundle\Controller;
// ...
class ArticleController extends Controller
{
public function recentListAction()
{
$articles = ...;
dump($articles);
// ...
}
}Note
The output of the dump() function is then rendered in the web developer
toolbar.
The same mechanism can be used in Twig templates thanks to dump() function:
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{# app/Resources/views/article/recent_list.html.twig #}
{{ dump(articles) }}
{% for article in articles %}
<a href="/article/{{ article.slug }}">
{{ article.title }}
</a>
{% endfor %}The variables will only be dumped if Twig's debug setting (in config.yml)
is true. By default this means that the variables will be dumped in the
dev environment but not the prod environment.
