Liquid 是否有 "does not contain" 或 "not in array" 运算符？

Question

在 Liquid 模板中调用数组项时，如何调用 does not contain 或 not in array？

Answer 1

unless 救援！

创建一个 [A, B, C] 数组。

{% assign input = "A,B,C" | split:"," %}

unless 仅在不满足约束时打印。

这什么都不打印：

{% unless input contains 'A' %}No A{% endunless %}

这会打印“No Z”：

{% unless input contains 'Z' %}No Z{% endunless %}

Answer 2

你可以这样做：

{% if collection.tags contains 'tag' %}
{% else %}
  do stuff!
{% endif %}

Does Liquid have a "does not contain" or "not in array" operator?