Symfony2 + Twig：尝试从全局命名空间调用函数 "replace"

Question

我在我的应用程序中遇到此错误，但我找不到失败的地方：

Attempted to call function "replace" from the global namespace.

这是堆栈跟踪：

[1] Symfony\Component\Debug\Exception\UndefinedFunctionException: Attempted to call function "replace" from the global namespace.
    at n/a
        in /var/www/html/reptooln_admin/app/cache/dev/twig/eb/76/c3cb3f071f775598b83974700b4a2523941a76b0f3cf8801d01d9210eae0.php line 318

现在在我的代码中定义了这个 Twig 扩展：

services:
    app.twig.extension:
        class: AppBundle\Extension\AppTwigExtension
        tags:
            -  { name: twig.extension }

这是 class:

<?php

namespace AppBundle\Extension;

class AppTwigExtension extends \Twig_Extension
{
    public function getFilters()
    {
        return array(
            'var_dump'   => new \Twig_Filter_Function('var_dump'),
            'empty' => new \Twig_Filter_Function('empty', array($this, 'is_empty')),
            'isset' => new \Twig_Filter_Function('isset', array($this, 'is_set')),
            'isnull' => new \Twig_Filter_Function('isnull', array($this, 'is_null')),
            'ucfirst' => new \Twig_Filter_Function('ucfirst', array($this, 'uc_first')),
            'ucwords' => new \Twig_Filter_Function('ucwords', array($this, 'uc_words')),
            'count' => new \Twig_Filter_Function('count', array($this, 'co_unt')),
            'sizeof' => new \Twig_Filter_Function('sizeof', array($this, 'size_of')),
            'concat' => new \Twig_Filter_Function('concat', array($this, 'concat')),
            'in_array' => new \Twig_Filter_Function('in_array', array($this, 'inarray')),
            'array' => new \Twig_Filter_Function('array', array($this, 'array_')),
            'add_to_array' => new \Twig_Filter_Function('add_to_array', array($this, 'add_to_array')),
            'replace' => new \Twig_Filter_Function('replace', array($this, 'replace')),
            'htmlentitydecode' => new \Twig_Filter_Function('htmlentitydecode', array($this, 'htmlentitydecode')),
        );
    }

    public function replace($subject, $search, $replace)
    {
        return str_replace($search, $replace, $subject);
    }
    // functions goes here

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

怎么了？我找到了 this post 但对我的情况没有帮助

Answer 1

从错误来看，您似乎注册了一个名为 replace 的过滤器，但您正试图将其作为函数调用。

所以这应该已经起作用了（但我不认为这是你想要做的）：

{{ my_variable|replace('something', 'with', 'this') }}

我认为你想做的是：

{{ replace(my_variable, 'replace', 'this') }}

要注册函数，请将名为 getFunctions 的方法添加到您的 AppTwigExtension class，并将 replace 定义移至该方法。有关详细信息，请参阅 documentation。

Symfony2 + Twig：尝试从全局命名空间调用函数 "replace"

Symfony2 + Twig: Attempted to call function "replace" from the global namespace

php

symfony

twig

symfony-2.6

symfony-2.7