调用树枝扩展时未知函数错误 [英] unknow function error when calling twig extension

问题描述

我想创建一个 twig 扩展，但 Symfony 一直告诉我我的功能未知.

I'm looking to create a twig extension but Symfony keeps telling me my function is unknown.

这是我的课:

<?php

namespace AppBundle\Twig\Extension;

use Twig_Extension;
use Twig_SimpleFunction;

class FormExtension extends Twig_Extension
{
    public function getFonctions()
    {
        $twigClass = 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode';
        $options = array(
            'node_class' => $twigClass,
            'is_safe' => ['html']
        );

        return array(
            'form_color' => new Twig_SimpleFunction($this, null, $options)
        );
    }

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

这里是 AppBundle\Resources\config\services.yml 中的服务声明

And here is the service declaration in AppBundle\Resources\config\services.yml

services:
    app.form_extension:
        class: AppBundle\Twig\Extension\FormExtension
        tags:
            - { name: twig.extension }

我可能遗漏了一些东西，但我不知道是什么.请帮忙！

I'm probably missing somehing but I can't find out what. Please help!

推荐答案

1. 将 getFonctions 更正为 getFunctions
2. 试试这个:

1. Correct getFonctions to getFunctions
2. Try this way:

...
    return array(
        new Twig_SimpleFunction('form_color', null, $options)
    );
...

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