和/或Jekyll上的where_exp表达式

问题描述

我正在尝试使用where_exp使用or运算符基于两个类别过滤Jekyll页面:

I'm trying to use where_exp to filter Jekyll pages based on two categories using or operator:

{% assign sortedPages = site.pages | sort:"date" | reverse | where_exp:"page","page.categories contains 'design-pattern'" %}

但是我收到此错误:

Ar or/and运算符是否真正受支持?如我的代码片段所示，我不知道如何使用where_exp过滤页面.

Ar or/and operators really supported? I can't figure out how to filter pages using where_exp as shown in my code snippet.

推荐答案

我已经通过一些变通办法解决了我的问题……这不是一个非常优雅的解决方案，但因为Jekyll并不是要创建实际的软件体系结构. ..目前，它可以正常工作:

I've managed to solve my issue with some workarounds... It's not a very elegant solution, but as Jekyll isn't about creating actual software architecture... For now, it works flawlessly:

{% assign patterns = "" | split,"" %}

{% for page in site.pages %}
{% if page.categories contains "design-pattern" or page.categories contains "anti-pattern" %}
{% assign patterns = patterns | push:page %}
{% endif %}
{% endfor %}

{% assign sortedPages = patterns | sort:"date" | reverse %}

1. 我创建一个空数组.
2. 我遍历所有页面，并按两个可能的类别对其进行过滤.
3. 我推送满足所有条件的页面.
4. 一旦获得过滤后的页面数组，便对其进行排序和反转.

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