Get next and previous elements out of an array in liquid

Question

Short version:

I want to add 1 to a number in a liquid template and use the result as an array index.

{% capture plus_one %}{{ 0 | plus: 1 }}{% endcaptur         


        

Answer 1

assign preserves the number:

{% for item in items %}
    {% assign next_i = forloop.index0 | plus: 1 %}
    {% assign prev_i = forloop.index0 | minus: 1 %}
    {{ items[next_i] }}
    {{ items[prev_i] }}
{% endfor %}