html – 如何使用Jekyll通过自定义YAML前端变量对帖子进行排序？

我正在尝试在我的Jekyll网站中创建一个页面,该页面将显示一个自定义变量并列出包含该自定义变量的帖子.

我使用模板Thiago Rossener创建了一个电影评论博客：
蒂亚戈的模板：https://github.com/thiagorossener/jekflix-template
我的网站：https://www.howdareyoureview.com/

在每篇文章中,我都在YAML前面的内容中定义了与电影细节相关的自定义变量(即演员,导演得分等).

例如：

---
layout: post
title: "Baby Driver"
image: 'https://res.cloudinary.com/how-dare-you-review/image/upload/c_fill,h_399,w_760/v1529865791/baby-driver.png'
tags:
- action
score: 72
director: Edgar Wright
written-by: Edgar Wright
staring: 
- Ansel Elgort
- Lily James
- Eiza González
- Jon Hamm
- Jamie foxx
---

我想创建与此模板中已存在的标签页完全相同的页面：
https://www.howdareyoureview.com/tags/

除了我想要按导演,主演等排序,而不是标签.
使用tags.html文件中的以下代码创建标签页：

---
layout: minimal
title: "#Tags"
permalink: /tags/index.html
description: "Procure por sua #tag favorita."
---

<div class="tags">
{% assign tags_list = site.tags %}
  {% if tags_list.first[0] == null %}
    {% for tag in tags_list %}
        <a href="#{{ tag | slugify }}">{{ tag }}</a>
    {% endfor %}
  {% else %}
    {% for tag in tags_list %}
        <a href="#{{ tag[0] | slugify }}">{{ tag[0] }}</a>
    {% endfor %}
  {% endif %}
{% assign tags_list = nil %}
</div>

{% for tag in site.tags  %}
    <div class="tag-wrapper">
    <span class="tag-title" id="{{ tag[0] | slugify }}">{{ tag[0] }}</span>
    <ul class="post-list">
        {% assign pages_list = tag[1] %}
        {% for post in pages_list reversed %}
            {% if post.title != null %}
            {% if group == null or group == post.group %}
            <li><a href="{{ site.url }}{{ post.url }}">{{ post.title }}<span class="entry-date"><time datetime="{{ post.date | date_to_xmlschema }}" itemprop="datePublished">{{ post.date | date: "%m/%d/%Y" }}</time></a></li>
            {% endif %}
            {% endif %}
        {% endfor %}
        {% assign pages_list = nil %}
        {% assign group = nil %}
    </ul>
</span>
</div>
{% endfor %}

为了实现我创建的自定义变量,我尝试用director替换“tag / tags”并将文件保存到根目录中作为“directors.html”,但页面为空白.

---
layout: minimal
title: "#Directors"
permalink: /directors/index.html
description: "Procure por sua director favorita."
---
<div class="directors">
{% assign directors_list = site.director %}
  {% if directors_list.first[0] == null %}
    {% for director in directors_list %}
        <a href="#{{ tag | slugify }}">{{ director }}</a>
    {% endfor %}
  {% else %}
    {% for director in directors_list %}
        <a href="#{{ director[0] | slugify }}">{{ director[0] }}</a>
    {% endfor %}
  {% endif %}
{% assign directors_list = nil %}
</div>

{% for director in site.director  %}
    <div class="director-wrapper">
    <span class="director-title" id="{{ tag[0] | slugify }}">{{ director[0] }}</span>
    <ul class="post-list">
        {% assign pages_list = director[1] %}
        {% for post in pages_list reversed %}
            {% if post.title != null %}
            {% if group == null or group == post.group %}
            <li><a href="{{ site.url }}{{ post.url }}">{{ post.title }}<span class="entry-date"><time datetime="{{ post.date | date_to_xmlschema }}" itemprop="datePublished">{{ post.date | date: "%m/%d/%Y" }}</time></a></li>
            {% endif %}
            {% endif %}
        {% endfor %}
        {% assign pages_list = nil %}
        {% assign group = nil %}
    </ul>
</span>
</div>
{% endfor %}

由于代码和概念与填充标记的方式完全相同 – 我无法理解为什么这不起作用 – 我希望有人可以提供帮助！

这是我的整个目录供参考：
https://github.com/howdareyoureview/howdareyoureview.github.io

解决方法

标签页使用site.tags,这是一个按标签分组的site.posts数组,由Jekyll在生成时创建.

您试图通过定位site.directors来复制,但此预期的数组不存在.但是,您可以使用group_by过滤器来实现您的目标.

<div class="directors">
  {% assign directors = site.posts | group_by: 'director' | sort: "name" %}
  {% for director in directors %}
    {% if director.name == "" %}
      {% assign name = "Anonymous" %}
    {% else %}
      {% assign name = director.name %}
    {% endif %}
    <a href="#{{ name | slugify }}">{{ name }}</a>
  {% endfor %}
</div>

{% for director in directors %}
<div class="director-wrapper">
  {% if director.name == "" %}
    {% assign name = "Anonymous" %}
  {% else %}
    {% assign name = director.name %}
  {% endif %}
  <span class="director-title" id="{{ name | slugify }}">{{ name | debug }}</span>
    <ul class="post-list">
      {% assign pages_list = director.items %}
      {% for post in pages_list reversed %}
        <li><a href="{{ site.url }}{{ post.url }}">{{ post.title }}<span class="entry-date"><time datetime="{{ post.date | date_to_xmlschema }}" itemprop="datePublished">{{ post.date | date: "%m/%d/%Y" }}</time></a></li>
      {% endfor %}
    </ul>
  </span>
</div>
{% endfor %}

提示：您可以使用inspect过滤器来调试变量. {{myvar |检查}}