升级到 Symfony 2.2 后出现错误“找不到类 'Twig_SimpleFunction'”答案

【问题标题】：Error "Class 'Twig_SimpleFunction' not found" after upgrade to Symfony 2.2升级到 Symfony 2.2 后出现错误“找不到类 'Twig_SimpleFunction'”
【发布时间】：2013-12-12 17:09:20
【问题描述】：

我最近将 Symfony 从 2.1 更新到 2.2，现在出现错误：

错误：在 vendor/symfony/symfony/src/Symfony/Bundle/SecurityBundle/Twig/Extension/LogoutUrlExtension.php 第 41 行中找不到类“Twig_SimpleFunction”

我的 composer.json：

...
"require": {
    "php": ">=5.4",
    "symfony/symfony": "2.2.*",
    "twig/twig": "1.11.x",
    "twig/extensions": "1.0.x-dev",
    "noetix/easy-csv": "dev-master",
    "symfony/assetic-bundle": "2.*",
    "symfony/swiftmailer-bundle": "2.*",
    "symfony/monolog-bundle": "2.*",
    "sensio/distribution-bundle": "2.*",
    "sensio/framework-extra-bundle": "2.*",
    "sensio/generator-bundle": "2.*",
    "jms/security-extra-bundle": "1.4.*",
    "jms/di-extra-bundle": "1.3.*",
    "jms/serializer": "0.12.*",
    "jms/serializer-bundle" : "0.12.*@dev",
    "jms/metadata" : "1.3.*",
    "friendsofsymfony/user-bundle": "patch-1-dev",
    "friendsofsymfony/jsrouting-bundle": "1.2.*",
    "propel/propel1": ">=1.6.7",
    "propel/propel-bundle": "1.2.x-dev",
    "willdurand/propel-typehintable-behavior": "dev-master",
    "pagerfanta/pagerfanta": "1.0.x-dev",
    "white-october/pagerfanta-bundle": "dev-master",
    "knplabs/knp-menu-bundle": "dev-master",
    "knplabs/knp-menu": "2.0.x-dev",
    "exercise/elastica-bundle": "dev-master",
    "gregwar/captcha-bundle": "dev-master",
    "nelmio/api-doc-bundle": "2.1.*",
    "fr3d/ldap-bundle": "2.0.*@dev",
    "conjecto/easyrdf-bundle": "dev-master"
},
...

Twig deprecated features page 说：“从 Twig 1.x 开始，使用 Twig_SimpleFunction”。我有 1.11，所以我不明白我做错了什么。

【问题讨论】：

标签： php symfony twig symfony-2.2

【解决方案1】：

找到了。正如我所怀疑的那样，问题在于无效的依赖项。我下载了 Symfony2.2.11 并相应地更改了我的 composer.json（注意不再引用 twig，并更改了一些 symfony/* 和 sensio/* 依赖项）：

"require": {
    "php": ">=5.3.3",
    "symfony/symfony": "2.2.*",
    "twig/extensions": "1.0.*",
    "noetix/easy-csv": "dev-master",
    "symfony/assetic-bundle": "2.1.*",
    "symfony/swiftmailer-bundle": "2.2.*",
    "symfony/monolog-bundle": "2.2.*",
    "sensio/distribution-bundle": "2.2.*",
    "sensio/framework-extra-bundle": "2.2.*",
    "sensio/generator-bundle": "2.2.*",
    "jms/security-extra-bundle": "1.4.*",
    "jms/di-extra-bundle": "1.3.*",
    "jms/serializer": "0.12.*",
    "jms/serializer-bundle" : "0.12.*@dev",
    "jms/metadata" : "1.3.*",
    "friendsofsymfony/user-bundle": "patch-1-dev",
    "friendsofsymfony/jsrouting-bundle": "1.2.*",
    "propel/propel1": ">=1.6.7",
    "propel/propel-bundle": "1.2.x-dev",
    "willdurand/propel-typehintable-behavior": "dev-master",
    "pagerfanta/pagerfanta": "1.0.x-dev",
    "white-october/pagerfanta-bundle": "dev-master",
    "knplabs/knp-menu-bundle": "dev-master",
    "knplabs/knp-menu": "2.0.x-dev",
    "exercise/elastica-bundle": "dev-master",
    "gregwar/captcha-bundle": "dev-master",
    "nelmio/api-doc-bundle": "2.1.*",
    "fr3d/ldap-bundle": "2.0.*@dev",
    "conjecto/easyrdf-bundle": "dev-master"
},

这安装了 twig 1.15 并且一切正常。 The manual page 有错误 - Twig_SimpleFunction 出现在 >1.11 和

【讨论】：

您可以接受此答案以使此问题看起来已解决。

【解决方案2】：

Twig 扩展类没有命名空间。你检查过你没有改变吗？

在你的扩展类中你应该使用\Twig_SimpleFunction，而不仅仅是Twig_SimpleFunction

【讨论】：

感谢您的回答，但问题是 Twig_SimpleFunction 根本不存在，尽管根据手册（我上面提到的链接）它应该存在。