如何在循环中将值与 twig 相加？

Question

  {% set totalPrice = 0 %}
  {% for category, product in table %}
    {% for key, value in product|last %}
         {{ value }}
    {% endfor %}
  {% endfor %}

The output is:

60
2

I try now to count the values together:

   {% set totalPrice = 0 %}
      {% for category, product in table %}
        {% for key, value in product|last %}
             {{ value }}
             {% set totalPrice = value %}
        {% endfor %}
      {% endfor %}
      Total:    {{ totalPrice }}

The result I expect is:

60
2
Total: 62

But the result I get is:

60
2
Total: 2

Answer 1

You override totalPrice 's value, rather than adding to it. So: use set totalPrice = totalPrice + value .

{% set totalPrice = 0 %}
{% for category, product in table %}
  {% for key, value in product|last %}
    {{ value }}
    {% set totalPrice = totalPrice + value %}
  {% endfor %}
{% endfor %}
Total: {{ totalPrice }}