liquid - Computing aggregate (e.g running total) with liquid

Question

Given an array of { name: string; amount: float }, how does one write out the data running total.

{% for entry in my_array %}
   {{ entry.name }}, {{ entry.amount }}, {{ ???running total??? }}
{% endfor %}

Answer 1

这是你要找的吗？

{% assign running_total = 0 %}
{% for entry in my_array %}
  {% assign running_total = running_total | plus: entry.amount %}
{% endfor %}