如何从数据文件循环显示内容？

Question

如果我指定{% assign member = site.data.members[page.author] %} 并在页面的frontmatter 中插入author: valuehere，数据可以显示。如果我指定{% for member in site.data.members %} ~~~ {{ member.name }} ~~~ {% endfor %}，它将不会循环

== members.yml

attorney1:
  birth_country: "United States of America"
  birth_city: "Paso Robles"
  birth_region: CA
  birth_zip: 93446
  birth_date: "05/1968"
  education: "Southeastern University: B.A. History – 2008, University of Florida Levin College of Law: Juris Doctor – 2001"
  image: attorney1.jpg
  nationality: "United States of America"
  name: "Attorney One Esq"
  first_name: "Attorney"
  last_name: "One"
  honorary: Esquire
  email: email@example.com
  home_country: "United States of America"
  home_city: "Ocala"
  home_region: "FL"
  home_zip: "34482"
  gender: Male
  permalink: "/lawyers/attorney1.html"
  ext: "02"
  practices: "Personal Injury · Insurance Litigation"
  web: "Lawyer One Esq is a past member of the Hillsborough County Bar Association and Young Lawyers Division, the Lakeland Bar Association, and Emerge. Jon was also served on the Board of Directors for Tri-County Human services, which serves Polk, Hardee, and Highlands counties. Lawyer One Esq is currently a member of the Jacksonville Bar Association."

我尝试过像这样重新格式化数据文件：

- author: attorney1
  name: "Attorney One"
~~~

然后像这样重新编码作者页面：

---
layout: attorney
title: "Attorney One"
crumbtitle: "Attorney One"
permalink: "/lawyers/attorney1.html"
jsontype: lawyer
genre: Law
headline: "Affordable Marion County Legal Representation"
author: attorney1
---
{% assign author = site.data.members | where: "author", "{{page.author}}" %}
<!-- Main -->
<article id="main">
  <header class="special container">
    <span class="icon fas fa-user-circle"></span>
    <h2>About {{ author.name }}</h2>
    {{ author.web | markdownify }}
  </header>
  <!-- One -->

目标是能够使用 for 循环并为作者页面提取数据。如果我像这样格式化数据文件：

attorney1:
    name: "Attorney one"

作者页面使用{% assign author = site.data.members[page.author] %} 并打破了for循环。

Answer 1

要成功迭代给定列表，您只需要一个结构合理的数据。

要使{% for member in site.data.members %} 正确循环，site.data.members 必须是一个成员数组。但从您发布的信息来看，结果数据似乎是键值对的Hash（或字典），而不是Array。

调查

要确认，您可以先简单地“检查”数据。将以下 sn-p 插入到您的模板中以获取数据的 JSON 表示：

<pre>
{{ site.data.members | inspect }}
</pre>

要成功迭代，生成的 JSON 应以方括号（[、]）开头和结尾：

[
  {
    "attorney1": {
      "birth_country": "United States of America",
      "birth_city": "Paso Robles"
    }
  },
  {
    "attorney2": {
      "birth_country": "United States of America",
      "birth_city": "Paso Robles"
    }
  },
]

但是，您的 members.yml 会产生类似于：

{
  "attorney1": {
    "birth_country": "United States of America",
    "birth_city": "Paso Robles"
  },
  "attorney2": {
    "birth_country": "United States of America",
    "birth_city": "Paso Robles"
  }
}

解决方案

单个文件

如果您想在一个 YAML 文件中包含所有律师信息，则结构为：

# _data/members.yml

- attorney1:
    birth_country: "United States of America"
    birth_city: "Paso Robles"
- attorney2:
    birth_country: "United States of America"
    birth_city: "Paso Robles"

个别文件

或者，如果您想单独整理个人信息：

# _data/members/attorney1.yml

birth_country: "United States of America"
birth_city: "Paso Robles"

# _data/members/attorney2.yml

birth_country: "United States of America"
birth_city: "Paso Robles"

---

选择

要根据给定键选择特定数据集，您可以将数据和键传递给where 过滤器和first 或last 过滤器：

{% assign member = site.data.members | where: 'author', page.author | first %}

通过上述方法，首先生成另一个成员数组，其中member.author 等于page.author，然后通过first 过滤器提取第一个条目。