如何在 Twig 过滤器“替换"中使用变量 [英] How to use variables in Twig filter 'replace'

问题描述

从表单的 php 中传递一个数组

Handing over an array from php of form

$repl_arr = array('serach-string1' => 'replace1', ...) 

对于 Twig 模板，我想为每个替换过滤器替换 Twig 变量中的字符串，类似于:

to a Twig template I would like to replace strings in a Twig variable per replace filter similar to this:

{{ block | replace({ repl_arr }) }}

这不起作用，也不像变量循环

That does not function and neither a variable loop like

{% for key,item in repla_arr %}
  {% set var = block | replace({ key : item }) %}
{% endfor %}

确实如此.它有什么问题?怎么可能呢?

does. What is wrong with it? How could it work?

推荐答案

要么传递整个数组，要么循环替换.

Either you pass the whole array, or you loop the replaces.

但是在循环替换时，您需要将 key 和 value 包裹在括号中以强制对这些进行插值

But when looping the replaces you need to wrap key and value in parentheses to force interpolation of those

{% set replaces = {
    '{site}'     : '{stackoverflow}',
    '{date}'  : "NOW"|date('d-m-Y'),
} %}

{% set haystack = '{site} foobar {site} {date} bar' %}


{{ haystack | replace(replaces) }}

{% set output = haystack %}
{% for key, value in replaces %}
    {% set output = output|replace({(key) : (value),}) %}
{% endfor %} 
{{ output }}

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