In content operation, understanding the frequency of keyword appearance in articles is an important aspect for SEO optimization and content strategy analysis.By counting the number of keywords, we can better evaluate the density, relevance, and even identify potential optimization space of the content.AnQiCMS provides a powerful and flexible template system,配合 its built-in content filter, we can easily count the occurrences of specific keywords in the article content.

Understanding the requirement: Why do we need to count keywords?

Count the number of times a keyword appears in an article, and there are several practical application scenarios:

  1. SEO optimization evaluation: The search engine considers the frequency of keywords when determining the relevance of an article.Although 'keyword density' is no longer the only ranking factor, understanding its distribution still helps with content strategy.
  2. Content quality analysisThe frequency of keywords that is too high or too low may affect the reading experience. Moderate statistics can help us maintain the natural fluidity of the content and avoid keyword stacking.
  3. Internal link strategyIn some automated internal link tools, counting keywords helps identify which words can be converted into links, pointing to other related pages.
  4. Competitive analysisAnalyze the keyword frequency in competitors' articles to provide reference for your own content creation.

Core tool in AnQiCMS template: Content Filter

AnQiCMS's template syntax is flexible and powerful, drawing on the advantages of template engines like Django or Blade, supporting basic operations such as variables, conditional judgments, loops, and so on.What is more important is that it provides a rich set of content filters (Filters) that can perform various processing on the output data, such as formatting time, truncating strings, even counting characters or word numbers.To count the frequency of keywords, we mainly use two key points: obtaining the article content, and applying the statistical filter.

Get article content:archiveDetailTag

Firstly, we need to obtain the full content of the article in the template. In the AnQiCMS article detail page template, various data of the current article can usually be accessed directly througharchive.字段名Access in the form. The main content field of the article is usuallyarchive.Content.

If you need to get the content of a specified article on a non-article detail page (such as the homepage or list page), you can usearchiveDetailLabel. However, for our current needs - to count keywords in the "article content", it usually means we are on the article detail page, and we can directly usearchive.Contentis the most convenient way.

For example, inarchive/detail.htmlIn such an article detail template, we can directly access:

{{ archive.Content|safe }}

Here|safeThe filter is to ensure that the HTML tags in the article content are parsed and displayed correctly, rather than as plain text output.

Count the number of keywords:countFilter

Having the article content, the next step is to count the frequency of keywords. AnQiCMS provides a very practicalcountThe filter to accomplish this task. This filter can calculate the frequency of a keyword in a string.

countThe basic usage of the filter is as follows:

{{ obj|count:关键词 }}

Among them:

  • objThe string object we need to count, for examplearchive.Content.
  • 关键词The target string we need to count.

For example, if we want to count how many times the word 'CMS' appears in a text:

{% set text = "欢迎使用安企CMS（AnQiCMS），这是一个基于Go语言的CMS。" %}
{% set cms_count = text|count:"CMS" %}
<p>关键词 "CMS" 在文本中出现了：{{ cms_count }} 次。</p>

The output of this code will be:关键词 "CMS" 在文本中出现了：2 次。

Combine them to get the complete implementation steps:

Now, we combine obtaining the article content with usingcountthe filter steps together. Suppose we are editing a template for an article detail page (for example/template/default/archive/detail.htmlOr customize the article template) and you want to count the number of times a keyword appears in the current article content.

You can follow these steps:

  1. Define the keyword to be counted: For easy management and modification, we can first usesetTag to define a variable to store the keywords we want to count.
  2. Get article contentUtilizearchive.ContentGet the full content of the current article.
  3. applycountFilter：Input the article content as a filter, the keywords as parameters, and get the statistical results.
  4. Display the results：Display the statistical results on the page.

Here is a complete code example showing how to count the occurrences of the keyword "AnQiCMS" in the current article content in the AnQiCMS template:

{# 1. 定义要统计的关键词 #}
{% set keyword_to_count = "AnQiCMS" %}

{# 2. 检查文章内容是否存在，以避免不必要的错误 #}
{% if archive.Content %}
    {# 3. 对文章内容应用 'count' 过滤器进行关键词统计 #}
    {% set count_result = archive.Content|count:keyword_to_count %}

    {# 4. 在页面上展示统计结果 #}
    <div class="keyword-stats">
        <p>关键词 "{{ keyword_to_count }}" 在本文中出现了：<strong>{{ count_result }}</strong> 次。</p>
    </div>
{% else %}
    <div class="keyword-stats">
        <p>文章内容为空，无法统计关键词出现次数。</p>
    </div>
{% endif %}

Insert this code snippet into an appropriate location in your article detail template, such as below the article title, at the end of the body, or in the sidebar. The page will automatically calculate and display the number of times the keyword appears when it loads.

Practice Exercise: A Specific Example

We have an article about the 'AnQiCMS tutorial', which mentions 'AnQiCMS' and 'Go language' multiple times.We hope to display the statistics of these two keywords at the bottom of the article.

`twig {# This is a part of the article detail page template #}

<h1>{{ archive.Title }}</h1>
<div class="article-meta">
    发布日期: {{ stampToDate(archive.CreatedTime, "2006-01-02") }} | 浏览量: {{ archive.Views }}
</div>

<div class="article-content">
    {{ archive.Content|safe }}
</div>

<div class="keyword-analysis">
    <h3>关键词统计分析：</h3>
    {% set keywords_to_analyze = ["AnQiCMS", "Go语言", "模板"]|list %} {# 定义一个关键词列表 #}
    {% set