在 Jekyll 的嵌套数据树中循环唯一值

Question

我有一个包含不同项目的数据文件。每个项目都有嵌套的任务。我正在尝试循环嵌套任务并按任务类型呈现每个任务。

YML数据

- name: Outside
  description: Description
  tasks:
  - type: Food
    name: Eat it outside
    status: working
  - type: Drinks
    name: Drink it outside
    status: working
- name: Inside
  description: Description
  tasks:
  - type: Food
    name: Eat it inside
    status: pending
  - type: Drinks
    name: Drink it inside
    status: working

液体

{% for item in site.data.info %}
    {% assign grouped-tasks-by-type = item.tasks | group_by: "type" %}
    {% for task in grouped-tasks-by-type %}
    <h2 class="task-type">{{ task.type }}</h2>
        <ul>
        {% for task in item.tasks %}
            {% if task.status == 'working' %}
                <li>{{ item.name }}: {{ task.name }}</li>
            {% endif %}
        {% endfor %}
        </ul>
    {% endfor %}
{% endfor %}

预期结果 (HTML)

<h2 class="task-type">Food</h2>
    <ul>
            <li>Outside: Eat it outside<li>
    </ul>
<h2 class="task-type">Drinks</h2>
    <ul>
            <li>Outside: Drink it outside<li>
            <li>Inside: Drink it inside<li>
    </ul>

但是，我得到一个完全空白的结果。这可能与group_by吗？

Answer 1

我希望我下面的算法可以很好地为您服务。我能够通过算法实现您期望的最终结果。我无法group_by在我的解决方案中使用 。示例代码包含 Liquid 注释块来解释我的思考过程。

测试

我使用了minima git repo和 command jekyll s。我将您的 YML 数据放在_data/info.yml我本地克隆的最小 git存储库中带有路径的文件中。我用作post.html代码沙箱。

您可以通过{{ all_food_types | json }}在代码中执行将 Liquid 变量打印到 DOM 。

解决方案

{%- comment -%} 
  End Goal: Find all the food types for <h2>.

  1.  Use map: "tasks" to gather all the tasks into a single array.
      This will cause the loss of Outside/Inside information for each task

  2.  Use map: "type" to create a list of food types ("Food", "Drinks")
  3.  Use uniq to remove duplicate food types from the array
{%- endcomment -%}

{% assign all_food_types = site.data.info | map: "tasks" | map: "type" | uniq %}

{%- comment -%}
  End Goal: Loop through all the data looking 
            for a specific food type (Food, Drinks) 
            and group them together
{%- endcomment -%}

{% for food_type in all_food_types %}
<h2 class="task-type">{{ food_type }}</h2>
    <ul>
      {% for item in site.data.info %}
        {% for task in item.tasks %}
            {% if task.status == 'working' and task.type == food_type %}
                <li>{{ item.name }}: {{ task.name }}</li>
            {% endif %}
        {% endfor %}
      {% endfor %}
    </ul>
{% endfor %}

顺便说一句，无论出于何种原因，我的液体最终使用了大量数组和 for 循环。