英文:
Rails: Truncating HTML-tagged text while preserving link text during truncation in a database column
问题
我有一个名为comment的数据库列，用于存储包含HTML标记的评论。
为了缩短大段文字并在弹出窗口中完整显示它们，我使用了truncate(comment, length: 50, escape: false)函数。
让我们考虑两个示例：
示例1：
comment列包含以下带有HTML标记的纯文本。通过使用escape: false，HTML标记不会被截断，文本会正确显示，包括任何格式，如粗体：
<strong>123</strong><br>
\\\<br>
<strong>test</strong>
示例2：
在这种情况下，我使用了href标记来创建一个链接，但escape的行为不像预期的那样。它不会将其识别为HTML标记，而是将其视为纯文本：
<a href="/uploads/attachments/2211/test.pdf" target="_blank">ClickToOpenFile</a>
截断后，它会显示类似于：
<a href="/uploads/attachments/2..
然而，期望的结果是仅截断<a>标记内的文本，保持链接文本"ClickToOpenFile"不变。
我尝试过使用raw和html_safe，但不幸的是，它们没有提供期望的结果。
英文:
I have a database column named comment that stores comments containing HTML tags.
To shorten large texts and display them fully in a pop-up, I'm using the truncate(comment, length: 50, escape: false) function.
Let's consider two examples:
Example 1:
The comment column contains the following plain text with HTML tags. By using escape: false, HTML tags are not truncated, and the text is displayed correctly, including any formatting such as bold:
<strong>123</strong><br>
\\\<br>
<strong>test</strong>
Example 2:
In this case, I'm using an href tag to create a link, but the escape behavior is not functioning as expected. Instead of recognizing it as an HTML tag, it treats it as plain text:
<a href="/uploads/attachments/2211/test.pdf" target="_blank">ClickToOpenFile</a>
After truncation, it displays something like:
<a href="/uploads/attachments/2..
However, the desired outcome is to only truncate the text inside the <a> tag, keeping the link text "ClickToOpenFile" intact.
I have attempted using raw and html_safe, but unfortunately, they did not provide the desired results.
答案1
得分: 1
使用 github.com/hgmnz/truncate_html gem：
some_html = ''<ul><li><a href="http://whatever">This is a link</a></li></ul>''
truncate_html(some_html, length: 15, omission: ''...(continued)')
=> '<ul><li><a href="http://whatever">This...(continued)</a></li></ul>'
英文:
With github.com/hgmnz/truncate_html gem:
some_html = '<ul><li><a href="http://whatever">This is a link</a></li></ul>'
truncate_html(some_html, length: 15, omission: '...(continued)')
=> <ul><li><a href="http://whatever">This...(continued)</a></li></ul>
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