问题描述
是否可以使用 PHP 检索 Twig 模板中的所有变量?
Is it possible to retrieve all variables inside a Twig template with PHP?
例如 someTemplate.twig.php:
Example someTemplate.twig.php:
Hello {{ name }},
your new email is {{ email }}
现在我想做这样的事情:
Now I want to do something like this:
$template = $twig->loadTemplate('someTemplate');
$variables = $template->getVariables();
$variables 现在应该包含name"和email".
$variables should now contain "name" and "email".
我想这样做的原因是我正在研究一个 CMS 系统我的用户动态设置我的树枝模板和变量他们还通过 API 填充变量.
The reason I want to do this is that I am working on a CMS systemwhere my twig templates and variables are dynamically set by my usersand they also fill the variables through an API.
我想为未设置的变量设置默认值，因此我需要模板中存在的所有变量的列表...
I want to set default values to not-set variables and therefore Ineed a list of all variables that exist inside the template…
推荐答案
UPDATE 2019
虽然 {{ dump() }} 确实有效，但在某些情况下，如果它生成太多信息(例如，由于递归)，它可能会导致 PHP 出现内存耗尽"错误.在这种情况下，尝试 {{ dump(_context|keys) }} 以按名称获取已定义变量的列表，而不转储其内容.
Although {{ dump() }} does work, in some circumstances it may result in a "memory exhausted" error from PHP if it generates too much information (for example, due to recursion). In this case, try {{ dump(_context|keys) }} to get a list of the defined variables by name without dumping their contents.
2017 年更新
可以使用 {{ dump() }} 过滤器.感谢您在评论中指出这一点！
It is possible by using {{ dump() }} filter. Thanks for pointing that out in the comments!
过时
这是不可能的.
您可以在 twig 模板中查找这些变量并向它们添加 |default('your_value') 过滤器.它将检查变量是否已定义且不为空，如果没有 - 将用您的值替换它.
You can look for these variable in twig templates and add |default('your_value') filter to them. It will check if variable is defined and is not empty, and if no - will replace it with your value.
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