Twig模板的Not子句
问题描述：
How do I do a NOT clause in a Twig template similar to PHP's !? Given sick values of either true or false, I tried the following, but it throws an error.
{% if !sick %}
Kenny is NOT sick.
{% elseif dead %}
You killed Kenny! You bastard!!!
{% else %}
Kenny looks okay --- so far
{% endif %}
如何在类似于PHP的！ code>的Twig模板中执行NOT子句？ 给定 true code>或 false code>的 sick code>值，我尝试了以下操作，但它会抛出错误。 p>
{％if！sick％}
Kenny没病。
{％elseif dead％}
你杀了肯尼！ 你这个混蛋!!!
{％else％}
肯尼看起来没问题---到目前为止
{％endif％}
code> pre>
div>
答
You should use not keyword as negation.
{% if not sick %}
Kenny is NOT sick.
{% elseif dead %}
You killed Kenny! You bastard!!!
{% else %}
Kenny looks okay --- so far
{% endif %}
Following this documentation page and this answear.