如何从2变量树枝添加？

Question

Anyone knows how to addition two variable in twig I want to do something like: 任何人都知道如何在树枝中添加两个变量我想做的事情如下：

{{ var1 }} + {{ var2 }} {{var1}} + {{var2}}

Answer 1

Just do it inside the {{ }} 只需在{{ }}

{{ var1 + var2 }}

If you want to assign it to some other variable: 如果要将其分配给其他变量：

{% set foo = var1 + var2 %}
{{ foo }}

Answer 2

Declaration : 宣言：

{% set counter = 0 %}

Doing the addition : 做补充：

{% set counter = counter + 1 %}

For displaying in twig template : 用于在树枝模板中显示：

{{ counter }}