Question

如果我指定

Traceback (most recent call last):
  File "amazonscraper_advanced.py", line 43, in <module>
    cursor.execute(sql)
  File "C:\Users\...\AppData\Local\Programs\Python\Python36\lib\site-packages\pymysql\cursors.py", line 170, in execute
    result = self._query(query)
  File "C:\Users\...\AppData\Local\Programs\Python\Python36\lib\site-packages\pymysql\cursors.py", line 328, in _query
    conn.query(q)
  File "C:\Users\...\AppData\Local\Programs\Python\Python36\lib\site-packages\pymysql\connections.py", line 517, in query
    self._affected_rows = self._read_query_result(unbuffered=unbuffered)
  File "C:\Users\...\AppData\Local\Programs\Python\Python36\lib\site-packages\pymysql\connections.py", line 732, in _read_query_result
    result.read()
  File "C:\Users\...\AppData\Local\Programs\Python\Python36\lib\site-packages\pymysql\connections.py", line 1075, in read
    first_packet = self.connection._read_packet()
  File "C:\Users\...\AppData\Local\Programs\Python\Python36\lib\site-packages\pymysql\connections.py", line 684, in _read_packet
    packet.check_error()
  File "C:\Users\...\AppData\Local\Programs\Python\Python36\lib\site-packages\pymysql\protocol.py", line 220, in check_error
    err.raise_mysql_exception(self._data)
  File "C:\Users\...\AppData\Local\Programs\Python\Python36\lib\site-packages\pymysql\err.py", line 109, in raise_mysql_exception
    raise errorclass(errno, errval)
pymysql.err.InternalError: (1136, "Column count doesn't match value count at row 1")

并在页面的前面插入{% assign member = site.data.members[page.author] %}，则可以显示

数据。如果指定author: valuehere

，它将不会循环

== Members.yml

{% for member in site.data.members %} ~~~ {{ member.name }} ~~~ {% endfor %}

我已经尝试过像这样重新格式化数据文件：

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 &middot; 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."

然后像这样重新编码作者页面：

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

目标是能够使用for循环并提取作者页面的数据。如果我将数据文件格式化为：

---
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 -->

作者页面与attorney1: name: "Attorney one"配合使用并中断for循环。

Answer 1

要在给定列表中成功迭代，您需要的只是结构正确的数据。

要使{% for member in site.data.members %}正确循环，site.data.members必须是成员的数组。但是从您发布的信息来看，看起来结果数据是键值对的Hash（或 dictionary ），而不是Array。

调查

要确认，您可以先简单地“检查”数据。将以下代码段插入模板中，以获取数据的JSON表示形式：

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

要成功进行迭代，生成的JSON 应该以方括号（[，]）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，相反，您的members.yml会产生类似以下内容：

{
  "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

如果您希望将所有律师信息包含在一个YAML文件中，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"

单个文件

或者如果您想单独组织个人信息：

# _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

要基于给定键选择特定的数据集，可以将数据和键传递到where过滤器和first或last过滤器：

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

使用上述方法，将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。

如何从数据文件循环显示内容？

1 个答案:

调查

解决方案

单个文件

单个文件

选择