使用Jekyll，如何使用for循环更改数组的内容? [英] Using Jekyll, how do you alter an array's contents using a for loop?

问题描述

说我的作用域中有一个数组thingy.foo = ['abc', 'def'].

Say I have an array thingy.foo = ['abc', 'def'] in my scope.

我的目标是能够遍历thingy.foo中的所有项目并对其应用一些条件逻辑，从而覆盖数组中的现有项目...类似这样:

My goal is to be able to loop over all the items in thingy.foo and apply some conditional logic to it, overwriting the existing item in the array... Something like this:

{% for item in thingy.foo %}
  {% assign thingy.foo[forloop.index0] = site.data.lookups[item] | default: item %}
{% endfor %}

我正在做的事情与项目无关，我遇到的问题是更新数组中的项目.该代码编译并运行.在循环中，我可以确认查找"部分正常工作(如果我将其分配给t并检查t，那么我将获得一个查找值，但thingy.foo[0]仍然是原始值).

What I am doing do the item is a bit irrelevant, the part I'm having issues with is updating the item in the array. The code compiles and runs. Within the loop, I can confirm that the "lookup" part works (if I assign it to t and inspect t then I get a looked up value, but thingy.foo[0] is still the original value).

是否可以在Jekyll中更新/覆盖阵列?

Is it possible to update/overwrite arrays in Jekyll?

(这是打算在GitHub Pages上使用的，所以我不能使用自定义插件).

(this is intended for use on GitHub Pages, so I cannot use custom plugins).

推荐答案

看起来您无法对现有数组进行变异...但是您可以遍历初始数组并将项变异为新数组，如下所示:

It looks like you cannot mutate existing arrays... but you can loop over the initial array and mutate items into a new array, like this:

{% assign newArray = '' | split: '' %}
{% for item in thingy.foo %}
  {% assign newItem = site.data.lookups[item] | default: item %}
  {% assign newArray = newArray | push: newItem %}
{% endfor %}

newArray现在包含来自thingy.foo的已更改项目的列表.

The newArray now contains a list of altered items from thingy.foo.

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