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Twig_Error_Syntax:未知的“template_from_string”函数。功能过时了吗?

我记得在 Composer 更新后我得到了这个错误,但以前它运行得很好,在比较软件包版本时我没有发现差异。我在模板中以这种方式使用它:

{{ include(template_from_string(page.body)) }}
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其中“页面”是来自控制器的实体对象。当前版本是:

symfony/symfony                          v2.8.15
twig/extensions                          v1.4.1
twig/twig                                v1.30.0
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同样在 config.yml 中:

twig:
    debug:            "%kernel.debug%"
    strict_variables: "%kernel.debug%"
    form_themes:
        - 'AppBundle::Form/form_override.html.twig'
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现在有vendor/twig/twig/lib/twig/Twig/Extension/StringLoader.php视觉上正确的文件,但似乎仍然无法正常工作。完整的堆栈跟踪:

[1] Twig_Error_Syntax: Unknown "template_from_string" function.
    at n/a
        in ProjectDir\src\AppBundle/Resources/views/Page.html.twig line 22

    at Twig_ExpressionParser->getFunctionNodeClass('template_from_string', '22')
        in ProjectDir\vendor\twig\twig\lib\Twig\ExpressionParser.php line 374

    at Twig_ExpressionParser->getFunctionNode('template_from_string', '22')
        in ProjectDir\vendor\twig\twig\lib\Twig\ExpressionParser.php line 162

    at Twig_ExpressionParser->parsePrimaryExpression()
        in ProjectDir\vendor\twig\twig\lib\Twig\ExpressionParser.php line 102

    at Twig_ExpressionParser->getPrimary()
        in ProjectDir\vendor\twig\twig\lib\Twig\ExpressionParser.php line 55

    at Twig_ExpressionParser->parseExpression()
        in ProjectDir\vendor\twig\twig\lib\Twig\ExpressionParser.php line 520

    at Twig_ExpressionParser->parseArguments(true)
        in ProjectDir\vendor\twig\twig\lib\Twig\ExpressionParser.php line 373

    at Twig_ExpressionParser->getFunctionNode('include', '22')
        in …
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php symfony twig composer-php

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