symfony twig 扩展获取配置变量

symfony twig extension get config variable

我正在尝试从自定义 twig 扩展中获取配置变量。

如何从配置中获取 someVar?

// src/AppBundle/Twig/AppExtension.php
namespace AppBundle\Twig;

class AppExtension extends \Twig_Extension
{
    public function getFilters()
    {
        return array(
            new \Twig_SimpleFilter('price', array($this, 'priceFilter')),
        );
    }

    public function priceFilter($number, $decimals = 0, $decPoint = '.', $thousandsSep = ',')
    {
        $price = number_format($number, $decimals, $decPoint, $thousandsSep);
        // HOW TO ACCESS TO CONFIG VARIABLE
        $price = '$'.$price;
        return $price;
    }

    public function getName()
    {
        return 'app_extension';
    }
}

# app/config/services.yml
services:
    app.twig_extension:
        class: AppBundle\Twig\AppExtension
        public: false
        tags:
            - { name: twig.extension }

twig:
    debug:            "%kernel.debug%"
    strict_variables: "%kernel.debug%"
    globals:
        someVar: "someValue"

您可以将其作为普通变量访问。

{{someVar}}

看这里:

http://symfony.com/doc/current/cookbook/templating/global_variables.html

希望对您有所帮助!

{{someVar}} 是正确的,如果你需要在模板中阅读它

但是如果你需要在你放置//如何访问配置变量的地方获取扩展内部的全局变量,那么使用下面的代码:

/* @var $globals \Twig_Environment */
$globals = $this->container->get('twig');
$vars = $globals->getGlobals();
var_dump($vars['someVar']); 

更新: 您将需要在扩展中传递容器,因此添加构造函数

public function __construct(ContainerInterface $container)
{
    $this->container = $container;
}

并在 service.yml

传递容器
   twig.extension.name:
        class: App\SomeBundle\Extensions\ClassTwig
        arguments: [@service_container]
        tags:
            - { name: 'twig.extension' }