In website operation, we often need to display the condensed content of articles in article lists, search result summaries, or social media shares.This concise content must not only attract users' attention but also ensure that the complex HTML structure behind it is not destroyed, in order to avoid affecting the page layout and user experience.For search engine optimization (SEO), a clean and effective code structure is crucial.
AnQiCMS (AnQi Content Management System) is an enterprise-level content management system developed based on the Go language, deeply understanding the pain points and needs of website operation.It not only provides a series of powerful SEO tools such as multi-site management, flexible content model, multilingual support, and pseudo-static and 301 redirection, but also puts great effort into the details of content display.truncatechars_htmlThe filter is a practical feature designed to solve the integrity issue of HTML structure during content truncation.
Content truncation and HTML structure: An invisible challenge in SEO operations.
Imagine if your article content is rich with images, links, bold text, even complex layout tags, and you simply truncate it by character count. The result is likely to be truncated HTML tags causing page chaos, such as a<div>Label was truncated without corresponding</div>Closed, thereby affecting the display of subsequent content.This could not only provide visitors with a poor experience, but may also pose obstacles for search engine crawlers when crawling and understanding the page, which in turn could affect your website's ranking performance in search results.
On the search engine results page (SERP), if the website's summary (meta description) is not displayed fully or appears as garbled due to damaged HTML tags, it will undoubtedly greatly reduce the willingness of users to click.Similarly, if the summaries of each article on the article list page are disheveled due to HTML structure damage, it will also deter users.Therefore, how to safely and elegantly extract content containing HTML is a common pursuit of website SEO and user experience.
AnQiCMS' elegant solution:truncatechars_htmlFilter
To perfectly solve this challenge, AnQiCMS introduces in its powerful template engine,truncatechars_htmlFilter.This filter is specifically designed to handle strings containing HTML tags, it can intelligently identify and close truncated tags, ensuring that the output HTML structure is always complete and valid.<div>or<strong>tags,truncatechars_htmlIt will also automatically close it correctly to avoid page disarray.
This filter is particularly suitable for the following scenarios:
- Summary display on the article list pageLet each article preview maintain its beauty within a fixed length.
- Meta description on the search results page.Ensure that the summary information you display in search engines is clear and lossless.
- Social media sharing copywritingPresent high-quality, structurally complete article segments within a limited number of characters.
How to use in AnQiCMS templatetruncatechars_html
In AnQiCMS, you can use syntax similar to the Django template engine to manipulate content.truncatechars_htmlCombining filters with variables is very simple.
Assume you have an article objectitemitsContentThe field contains the full article content with HTML formatting. If you want to extract the first 120 characters as a summary from the article list page and ensure the HTML structure is safe, you can use it like this:
<div class="article-summary">
{{ item.Content|truncatechars_html:120|safe }}
</div>
Here120It is the number of target characters you want to cut (including the ellipsis).|safeThe filter is a crucial step, it tells the template engine that you are suretruncatechars_htmlThe content output by the filter is safe HTML that can be directly rendered by the browser without needing to be escaped. If missing|safeThe browser may display the extracted HTML code as plain text instead of rendering it as actual page elements.
In addition to character truncation, AnQiCMS also providestruncatewords_htmlA filter with similar functionality, but it truncates based on word count, while also safely preserving the HTML structure.In some languages or content styles, word-by-word segmentation may be more natural.
Why is this crucial for website SEO?
In SEO optimization, details decide success or failure. A filter that can safely capture HTML content seems to be just a technical detail, but it actually has a profound impact:
- Enhance user experienceAn organized page layout and clear summary can effectively attract users and reduce the bounce rate.
- Optimize the display of search resultsAvoid unnecessary HTML tags or truncation errors in search snippets to improve click-through rate.
- Ensure page accessibilityThe damaged HTML structure may cause the page to display abnormally on different browsers or devices, affecting user access.
- Maintain code healthContinuous output of valid HTML helps search engines efficiently crawl and understand your website content, improving the efficiency of inclusion.
AnQiCMS is dedicated to providing a simple and efficient system architecture to help enterprises efficiently carry out content marketing, SEO optimization, and other activities. Throughtruncatechars_htmlSuch detailed features, Anqi CMS not only simplifies the complexity of content operation, but also provides a strong guarantee for your website's SEO performance in the invisible.
Common Questions (FAQ)
1.truncatecharsandtruncatechars_htmlWhat is the difference?
truncatecharsThe filter is used to interceptPlain textThe string does not consider whether the string contains HTML tags and may directly truncate the tags, leading to the destruction of the HTML structure.truncatechars_htmlThe filter is specifically used for truncatingContaining HTML tagsThe string will intelligently parse HTML, ensuring that all opened HTML tags are correctly closed even if the content is truncated, thus guaranteeing the integrity and validity of the output HTML structure.
2. My article content is in Markdown format, usingtruncatechars_htmlwill there be any problems?
No problem.In AnQiCMS, when you enable the Markdown editor and save the content, the system usually converts Markdown to HTML first.truncatechars_htmlWhen filtering, it is actually processing content that has already been converted to HTML. For example, when calling the document content fieldContentWhen, if Markdown rendering is enabled, it will be rendered to HTML first, thentruncatechars_htmland then the HTML will be safely truncated.
3. Usetruncatechars_htmlWhy do we still need to add|safeFilter?
AnQiCMS's template engine defaults to escaping all output variable content to HTML, which is a security mechanism to prevent cross-site scripting attacks (XSS).truncatechars_htmlThe filter will generate a string with HTML tags, if you do not add|safeFilter, the template engine will also treat these HTML tags as plain text and escape them (for example<p>Will become<p>), causing them not to be rendered correctly by the browser. Add|safeThe filter explicitly tells the template engine that you trusttruncatechars_htmlThe generated HTML content is safe and can be directly displayed as HTML.