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

问题

When calling items from and array in a Liquid template, how do you call does not contain or not in array?

回答1:

unless to the rescue !

Create an [A, B, C] array.

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

unless print only if constrain is not met.

This prints nothing:

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

This prints "No Z":

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

来源：https://stackoverflow.com/questions/30822160/does-liquid-have-a-does-not-contain-or-not-in-array-operator