Question

我将此代码添加到service.yml

//app/config/services.yml
services:
TwigEkler:
  class: MainBundle\Twig\TwigEkler
  tags:
     - { name: TwigEkler }

并创建了这个文件

//src/MainBundle/Twig/TwigEkler.php
<?

namespace MainBundle\Twig;

class TwigEkler extends \Twig_Extension
{
    public function getFunctions()
    {
        return array(
            new \Twig_SimpleFunction('gecis', array($this, 'gecisFunction')),
        );
    }

    public function gecisFunction($param)
    {
        if ($param == '4') {
            return 'FAT';
        }  else {
            return '';
        }
    }

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

}?>

并在树枝中使用它

{{ gecis(level) }}

但我收到此错误

request.CRITICAL：未捕获的PHP异常Twig_Error_Syntax：＆＃34;未知＆＃34; GECIS＆＃34;功能在＆＃34; gecis / gecis.html.twig＆＃34;在第24行。＆＃34;在 C：\ wamp64 \ www \ deneme \ vendor \ twig \ twig \ lib \ Twig \ ExpressionParser.php line 573 {＆＃34;例外＆＃34;：＆＃34; [对象]（Twig_Error_Syntax（代码：0）：未知 \＆＃34; GECIS \＆＃34;功能在\＆＃34; gecis / gecis.html.twig \＆＃34;在第24行 C：\ wamp64 \ WWW \ deneme \厂商\树枝\树枝\ lib中\嫩枝\ ExpressionParser.php：573）＆＃34;}

我的错误在哪里？

Answer 1

you need to follow

create a directory  in your AppBundle " Extensions "

and create a file " TwigExtensions.php "

In that file you need to define:

    namespace AppBundle\Extensions;

    use Symfony\Bridge\Doctrine\RegistryInterface;
    use AppBundle\Helper\CommonHelper;

    class TwigExtensions extends \Twig_Extension
    {
        public function __construct(RegistryInterface $doctrine){
            $this->doctrine = $doctrine;
        }

    }

Use 

  public function getFunctions(){
    //Define your function that you    
}


}

Than create  the function that you have define in " getFunctions".

Now you can use that function on twig.

如何为twig（symfony3）添加自定义功能？

1 个答案: